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<span>Sintetinės dervos</span> </div> </a> <ul id="toc-Sintetinės_dervos-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lietuvoje" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lietuvoje"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Lietuvoje</span> </div> </a> <ul id="toc-Lietuvoje-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Dervų_pavyzdžiai" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dervų_pavyzdžiai"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Dervų pavyzdžiai</span> </div> </a> <ul id="toc-Dervų_pavyzdžiai-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Etimologija" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Etimologija"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Etimologija</span> </div> </a> <ul id="toc-Etimologija-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Šaltiniai" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Šaltiniai"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Šaltiniai</span> </div> </a> <ul id="toc-Šaltiniai-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Turinys" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Turinys" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Derva</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 40 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-40" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">40 kalbų</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Pegunta" title="Pegunta – aragonesų" lang="an" hreflang="an" data-title="Pegunta" data-language-autonym="Aragonés" data-language-local-name="aragonesų" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B2%D9%81%D8%AA" title="زفت – arabų" lang="ar" hreflang="ar" data-title="زفت" data-language-autonym="العربية" data-language-local-name="arabų" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9F%D0%B5%D0%BA" title="Пек – baškirų" lang="ba" hreflang="ba" data-title="Пек" data-language-autonym="Башҡортса" data-language-local-name="baškirų" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Brea_(resina)" title="Brea (resina) – katalonų" lang="ca" hreflang="ca" data-title="Brea (resina)" data-language-autonym="Català" data-language-local-name="katalonų" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kolomaz" title="Kolomaz – čekų" lang="cs" hreflang="cs" data-title="Kolomaz" data-language-autonym="Čeština" data-language-local-name="čekų" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Beg" title="Beg – danų" lang="da" hreflang="da" data-title="Beg" data-language-autonym="Dansk" data-language-local-name="danų" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Pech_(Stoff)" title="Pech (Stoff) – vokiečių" lang="de" hreflang="de" data-title="Pech (Stoff)" data-language-autonym="Deutsch" data-language-local-name="vokiečių" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Pitch_(resin)" title="Pitch (resin) – anglų" lang="en" hreflang="en" data-title="Pitch (resin)" data-language-autonym="English" data-language-local-name="anglų" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Pe%C4%89o" title="Peĉo – esperanto" lang="eo" hreflang="eo" data-title="Peĉo" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Alquitr%C3%A1n" title="Alquitrán – ispanų" lang="es" hreflang="es" data-title="Alquitrán" data-language-autonym="Español" data-language-local-name="ispanų" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Pigi" title="Pigi – estų" lang="et" hreflang="et" data-title="Pigi" data-language-autonym="Eesti" data-language-local-name="estų" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Bike" title="Bike – baskų" lang="eu" hreflang="eu" data-title="Bike" data-language-autonym="Euskara" data-language-local-name="baskų" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%82%DB%8C%D8%B1" title="قیر – persų" lang="fa" hreflang="fa" data-title="قیر" data-language-autonym="فارسی" data-language-local-name="persų" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Piki" title="Piki – suomių" lang="fi" hreflang="fi" data-title="Piki" data-language-autonym="Suomi" data-language-local-name="suomių" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Poix_(mati%C3%A8re)" title="Poix (matière) – prancūzų" lang="fr" hreflang="fr" data-title="Poix (matière)" data-language-autonym="Français" data-language-local-name="prancūzų" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Pic" title="Pic – airių" lang="ga" hreflang="ga" data-title="Pic" data-language-autonym="Gaeilge" data-language-local-name="airių" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/B%C3%ACth" title="Bìth – škotų (gėlų)" lang="gd" hreflang="gd" data-title="Bìth" data-language-autonym="Gàidhlig" data-language-local-name="škotų (gėlų)" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Szurok" title="Szurok – vengrų" lang="hu" hreflang="hu" data-title="Szurok" data-language-autonym="Magyar" data-language-local-name="vengrų" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8A%D5%A5%D5%AF" title="Պեկ – armėnų" lang="hy" hreflang="hy" data-title="Պեկ" data-language-autonym="Հայերեն" data-language-local-name="armėnų" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Gegala" title="Gegala – indoneziečių" lang="id" hreflang="id" data-title="Gegala" data-language-autonym="Bahasa Indonesia" data-language-local-name="indoneziečių" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Pecho" title="Pecho – ido" lang="io" hreflang="io" data-title="Pecho" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Pece" title="Pece – italų" lang="it" hreflang="it" data-title="Pece" data-language-autonym="Italiano" data-language-local-name="italų" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%94%E3%83%83%E3%83%81_(%E6%A8%B9%E8%84%82)" title="ピッチ (樹脂) – japonų" lang="ja" hreflang="ja" data-title="ピッチ (樹脂)" data-language-autonym="日本語" data-language-local-name="japonų" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Asel%C9%A3er" title="Aselɣer – kebailų" lang="kab" hreflang="kab" data-title="Aselɣer" data-language-autonym="Taqbaylit" data-language-local-name="kebailų" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%94%BC%EC%B9%98_(%EC%A4%91%ED%95%A9%EC%B2%B4)" title="피치 (중합체) – korėjiečių" lang="ko" hreflang="ko" data-title="피치 (중합체)" data-language-autonym="한국어" data-language-local-name="korėjiečių" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9F%D0%B5%D0%BA" title="Пек – kirgizų" lang="ky" hreflang="ky" data-title="Пек" data-language-autonym="Кыргызча" data-language-local-name="kirgizų" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Pix" title="Pix – lotynų" lang="la" hreflang="la" data-title="Pix" data-language-autonym="Latina" data-language-local-name="lotynų" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Pech_(Substanz)" title="Pech (Substanz) – liuksemburgiečių" lang="lb" hreflang="lb" data-title="Pech (Substanz)" data-language-autonym="Lëtzebuergesch" data-language-local-name="liuksemburgiečių" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Pesa" title="Pesa – lombardų" lang="lmo" hreflang="lmo" data-title="Pesa" data-language-autonym="Lombard" data-language-local-name="lombardų" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Pek" title="Pek – olandų" lang="nl" hreflang="nl" data-title="Pek" data-language-autonym="Nederlands" data-language-local-name="olandų" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Bek" title="Bek – naujoji norvegų" lang="nn" hreflang="nn" data-title="Bek" data-language-autonym="Norsk nynorsk" data-language-local-name="naujoji norvegų" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Bek" title="Bek – norvegų bukmolas" lang="nb" hreflang="nb" data-title="Bek" data-language-autonym="Norsk bokmål" data-language-local-name="norvegų bukmolas" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pak_w%C4%99glowy" title="Pak węglowy – lenkų" lang="pl" hreflang="pl" data-title="Pak węglowy" data-language-autonym="Polski" data-language-local-name="lenkų" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Breu_(betume)" title="Breu (betume) – portugalų" lang="pt" hreflang="pt" data-title="Breu (betume)" data-language-autonym="Português" data-language-local-name="portugalų" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Punkara" title="Punkara – kečujų" lang="qu" hreflang="qu" data-title="Punkara" data-language-autonym="Runa Simi" data-language-local-name="kečujų" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Smoal%C4%83" title="Smoală – rumunų" lang="ro" hreflang="ro" data-title="Smoală" data-language-autonym="Română" data-language-local-name="rumunų" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%B5%D0%BA" title="Пек – rusų" lang="ru" hreflang="ru" data-title="Пек" data-language-autonym="Русский" data-language-local-name="rusų" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Pitch_(resin)" title="Pitch (resin) – Simple English" lang="en-simple" hreflang="en-simple" data-title="Pitch (resin)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Beck_(%C3%A4mne)" title="Beck (ämne) – švedų" lang="sv" hreflang="sv" data-title="Beck (ämne)" data-language-autonym="Svenska" data-language-local-name="švedų" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%B5%D0%BA_(%D0%B7%D0%B0%D0%BB%D0%B8%D1%88%D0%BE%D0%BA_%D0%B2%D1%96%D0%B4_%D0%BF%D0%B5%D1%80%D0%B5%D0%B3%D0%BE%D0%BD%D0%BA%D0%B8)" title="Пек (залишок від перегонки) – ukrainiečių" lang="uk" hreflang="uk" data-title="Пек (залишок від перегонки)" data-language-autonym="Українська" data-language-local-name="ukrainiečių" class="interlanguage-link-target"><span>Українська</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q840692#sitelinks-wikipedia" title="Keisti tarpkalbines nuorodas" class="wbc-editpage">Keisti nuorodas</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Vardų sritys"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Derva" title="Rodyti puslapio turinį [c]" accesskey="c"><span>Straipsnis</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Aptarimas:Derva" rel="discussion" title="Puslapio turinio aptarimas [t]" accesskey="t"><span>Aptarimas</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">lietuvių</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Žiūrėti"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Derva"><span>Skaityti</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Derva&veaction=edit" title="Redaguoti šį puslapį [v]" accesskey="v"><span>Keisti</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Derva&action=edit" title="Redaguoti šio puslapio išeities kodą [e]" accesskey="e"><span>Keisti vikitekstą</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Derva&action=history" title="Ankstesnės puslapio versijos [h]" accesskey="h"><span>Istorija</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Įrankiai" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Įrankiai</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Įrankiai</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">paslėpti</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Daugiau nustatymų" > <div class="vector-menu-heading"> Veiksmai </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Derva"><span>Skaityti</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Derva&veaction=edit" title="Redaguoti šį puslapį [v]" accesskey="v"><span>Keisti</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Derva&action=edit" title="Redaguoti šio puslapio išeities kodą [e]" accesskey="e"><span>Keisti vikitekstą</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Derva&action=history"><span>Istorija</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Bendra </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Specialus:Kas_%C4%AF_%C4%8Dia_rodo/Derva" title="Viki puslapių sąrašas, kuris nurodo čia [j]" accesskey="j"><span>Susiję straipsniai</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Specialus:Pakeitimai_susijusiuose_puslapiuose/Derva" rel="nofollow" title="Paskutiniai keitimai puslapiuose, pasiekiamuose iš šio puslapio [k]" accesskey="k"><span>Susiję keitimai</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Derva&oldid=6491969" title="Nuolatinė nuoroda į šią puslapio versiją"><span>Nuolatinė nuoroda</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Derva&action=info" title="Daugiau žinių apie šį puslapį"><span>Puslapio informacija</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Specialus:CiteThisPage&page=Derva&id=6491969&wpFormIdentifier=titleform" title="Informacija kaip cituoti šį puslapį"><span>Cituoti straipsnį</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Specialus:UrlShortener&url=https%3A%2F%2Flt.wikipedia.org%2Fwiki%2FDerva"><span>Gauti sutrumpintą URL nuorodą</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Specialus:QrCode&url=https%3A%2F%2Flt.wikipedia.org%2Fwiki%2FDerva"><span>Atsisiųsti QR kodą</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Spausdinti/eksportuoti </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Specialus:Book&bookcmd=book_creator&referer=Derva"><span>Kurti knygą</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Specialus:DownloadAsPdf&page=Derva&action=show-download-screen"><span>Parsisiųsti kaip PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Derva&printable=yes" title="Šio puslapio versija spausdinimui [p]" accesskey="p"><span>Versija spausdinimui</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Kituose projektuose </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Pitch" hreflang="en"><span>Vikiteka</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q840692" title="Nuoroda į susietą duomenų saugyklos įrašą [g]" accesskey="g"><span>Vikiduomenys įrašas</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Išvaizda"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Išvaizda</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">paslėpti</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Straipsnis iš Vikipedijos, laisvosios enciklopedijos.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="lt" dir="ltr"><figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Vaizdas:University_of_Queensland_Pitch_drop_experiment-white_bg.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/University_of_Queensland_Pitch_drop_experiment-white_bg.jpg/200px-University_of_Queensland_Pitch_drop_experiment-white_bg.jpg" decoding="async" width="200" height="301" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/University_of_Queensland_Pitch_drop_experiment-white_bg.jpg/300px-University_of_Queensland_Pitch_drop_experiment-white_bg.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/University_of_Queensland_Pitch_drop_experiment-white_bg.jpg/400px-University_of_Queensland_Pitch_drop_experiment-white_bg.jpg 2x" data-file-width="1012" data-file-height="1524" /></a><figcaption>Dervos klampumas apie 100 milijardų kartų didesnis negu <a href="/wiki/Vanduo" title="Vanduo">vandens</a>. Tokį klampumą iliustruoja dervos lašo eksperimentas.</figcaption></figure> <p><b>Derva</b> – bendrinis tam tikrų gamtinių arba sintetinių stambiamolekulių medžiagų pavadinimas. Tai amorfinės medžiagos, standartinėje aplinkoje kietos (šildomos skystėja) ar klampių <a href="/wiki/Skystis" title="Skystis">skysčių</a> pavidalo. Būdamos kietos būsenos paprastai pasižymi kriauklėtuoju lūžiu. Kiekviena derva turi savo minkštėjimo (<a href="/wiki/Lydymasis" title="Lydymasis">lydymosi</a>) temperatūrų intervalą. Net ir būdamos kietos dervos išlaiko takumą, tik tada tekėjimo greitis būna itin mažas (pvz., keli centimetrai per metus)<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>. </p><p>Dervomis paprastai vadinamos tam tikros <a href="/wiki/Augalai" title="Augalai">augalų</a> išskiriamos medžiagos ir sintetinės medžiagos, kurios naudojamos <a href="/wiki/Plastikai" class="mw-redirect" title="Plastikai">plastikų</a> gamyboje. Dervoje taip pat galima rasti iki 20 000 metų senumo gyvūnų liekanų.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Gamtinės_dervos"><span id="Gamtin.C4.97s_dervos"></span>Gamtinės dervos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=1" title="Redaguoti skyrelį: Gamtinės dervos" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=1" title="Edit section's source code: Gamtinės dervos"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Gamtinės dervos yra dvejopos – augalinės arba naftos kilmės. </p> <div class="mw-heading mw-heading3"><h3 id="Augalinės_dervos"><span id="Augalin.C4.97s_dervos"></span>Augalinės dervos</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=2" title="Redaguoti skyrelį: Augalinės dervos" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=2" title="Edit section's source code: Augalinės dervos"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Tai kai kurių augalų (vadinamųjų <a href="/wiki/Derviniai_augalai" title="Derviniai augalai">dervinių augalų</a>) išskiriamos medžiagos. Dervingos išskyros yra <a href="/wiki/Sakai" title="Sakai">sakai</a>, kokius Lietuvoje išskiria spygliuočiai medžiai, pvz., <a href="/wiki/Pu%C5%A1is" title="Pušis">pušys</a>, <a href="/wiki/Egl%C4%97" title="Eglė">eglės</a>. Dalis sakus perdirbant gaunamų produktų irgi yra dervos – pvz., <a href="/w/index.php?title=Kanifolija&action=edit&redlink=1" class="new" title="Kanifolija (puslapis neegzistuoja)">kanifolija</a>. </p><p>Žinomiausia fosilinių augalinė derva yra <a href="/wiki/Gintaras" title="Gintaras">gintaras</a>, vadinamosios pusiau fosilinėms dervoms priskiriami <a href="/w/index.php?title=Ka%C5%ABris&action=edit&redlink=1" class="new" title="Kaūris (puslapis neegzistuoja)">kaūris</a>, <a href="/wiki/Kopalas" class="mw-redirect" title="Kopalas">kopalas</a>. Kopalas ganai dažnai naudojamas kaip gintaro pakaitalas pigių papuošalų gamyboje. </p><p>Didelę praktinę reikšmę turi ir tropinių augalų išskiriamos dervos, pvz., <a href="/wiki/Damara" class="mw-disambig" title="Damara">damara</a>, <a href="/wiki/Kopalas" class="mw-redirect" title="Kopalas">kopalas</a>. Vienos iš jų renkamos nuo medžių, kitos kasamos iš žemės, pvz., kai kurios kopalo, kaūrio rūšys. </p><p>Susideda iš dervų <a href="/wiki/R%C5%ABg%C5%A1tis" title="Rūgštis">rūgščių</a> ir jų <a href="/wiki/Esteris" title="Esteris">esterių</a>, <a href="/wiki/Alkoholis" title="Alkoholis">alkoholių</a>, <a href="/w/index.php?title=Rezinolis&action=edit&redlink=1" class="new" title="Rezinolis (puslapis neegzistuoja)">rezinolių</a>, monohidroksilių <a href="/wiki/Fenoliai" title="Fenoliai">fenolių</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Naftos_kilmės_dervos"><span id="Naftos_kilm.C4.97s_dervos"></span>Naftos kilmės dervos</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=3" title="Redaguoti skyrelį: Naftos kilmės dervos" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=3" title="Edit section's source code: Naftos kilmės dervos"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Uoliena" title="Uoliena">Uolienose</a> aptinkami <a href="/wiki/Bitumas" title="Bitumas">bitumai</a> yra <a href="/wiki/Nafta" title="Nafta">naftos</a> bitumas, aptinkamas natūralus ar išskiriamas iš bituminių uolienų ar gamtinio <a href="/wiki/Asfaltas" title="Asfaltas">asfalto</a> telkinių, kurie susidaro viršutiniuose žemės plutos sluoksniuose iš susioksidavusios ir susipolimerizavusios naftos, praradusios lakesnes frakcijas. </p><p>Bituminės dervos taip pat gaunamos kaip <a href="/w/index.php?title=Naftos_perdirbimas&action=edit&redlink=1" class="new" title="Naftos perdirbimas (puslapis neegzistuoja)">naftos perdirbimo</a> produktai. </p><p>Bitumai dažnai naudojami kaip <a href="/wiki/Ri%C5%A1iklis" title="Rišiklis">rišiklis</a> (pvz., kelių dangų gamyboje), kaip hidroizoliacinė medžiaga <a href="/wiki/Statyba" title="Statyba">statyboje</a>, statybinių medžiagų pramonėje (bituminių dangų gamyboje), hidrotechniniuose darbuose ir pan. </p> <div class="mw-heading mw-heading2"><h2 id="Sintetinės_dervos"><span id="Sintetin.C4.97s_dervos"></span>Sintetinės dervos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=4" title="Redaguoti skyrelį: Sintetinės dervos" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=4" title="Edit section's source code: Sintetinės dervos"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sintetinės dervos yra termoreaktyvieji <a href="/w/index.php?title=Oligomeras&action=edit&redlink=1" class="new" title="Oligomeras (puslapis neegzistuoja)">oligomerai</a>, kurie perdirbami sukietėja – susidaro nelydžios ir netirpios medžiagos. Svarbiausios yra <a href="/w/index.php?title=Alkidin%C4%97_derva&action=edit&redlink=1" class="new" title="Alkidinė derva (puslapis neegzistuoja)">alkidinės dervos</a>, <a href="/w/index.php?title=Fenolformaldehidas&action=edit&redlink=1" class="new" title="Fenolformaldehidas (puslapis neegzistuoja)">fenolformaldehidinė</a> derva, karbamidformaldehidinė derva, <a href="/wiki/Poliesteris" title="Poliesteris">poliesterinės</a> dervos. </p><p>Gamtinės dervos dar senovėje buvo <a href="/wiki/Sintez%C4%97" class="mw-disambig" title="Sintezė">sintezuojamos</a>. Iki <a href="/wiki/XX_a." class="mw-redirect" title="XX a.">XX a.</a> ketvirtojo dešimtmečio <a href="/wiki/Lakas" title="Lakas">lakų</a>, <a href="/wiki/Da%C5%BEai" class="mw-redirect" title="Dažai">dažų</a>, <a href="/wiki/Klijai" title="Klijai">klijų</a>, <a href="/w/index.php?title=Linoleumas&action=edit&redlink=1" class="new" title="Linoleumas (puslapis neegzistuoja)">linoleumo</a>, poliravimo pastų, <a href="/wiki/Patefonas" title="Patefonas">patefono</a> plokštelių, <a href="/w/index.php?title=Pleistras&action=edit&redlink=1" class="new" title="Pleistras (puslapis neegzistuoja)">pleistrų</a>, <a href="/wiki/Kramtomoji_guma" title="Kramtomoji guma">kramtomosios gumos</a> gamybai buvo naudojamos tik gamtinės dervos, jomis t. p. apretuodavo audinius, apdorodavo <a href="/wiki/Popierius" title="Popierius">popierių</a>. Vėliau daugelį gamtinių dervų pakeitė sintetinės.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Pavyzdžiui, netgi pirmosios <a href="/wiki/Automobilis" title="Automobilis">automobilių</a> <a href="/wiki/Padanga" title="Padanga">padangos</a> buvo gaminamos ir natūralaus <a href="/wiki/Kau%C4%8Diukas" title="Kaučiukas">kaučiuko</a>, tačiau <a href="/wiki/Rinka" title="Rinka">rinkos</a> poreikis privertė rasti dirbtinio, sintetinio kaučiuko gamybos būdus. </p><p>Kai kurios sintetinės dervos gaminamos gamtines dervas polikondensuojant su kitomis cheminėmis medžiagomis ir tuo suteikiant joms naujas savybes. Pavyzdžiui, <a href="/w/index.php?title=Epoksidin%C4%97_derva&action=edit&redlink=1" class="new" title="Epoksidinė derva (puslapis neegzistuoja)">epoksidinė derva</a> pasižymi ypač geru sukibimu su <a href="/wiki/Metalas" class="mw-redirect" title="Metalas">metalais</a>, <a href="/w/index.php?title=Cheminis_atsparumas&action=edit&redlink=1" class="new" title="Cheminis atsparumas (puslapis neegzistuoja)">cheminiu atsparumu</a> ir <a href="/w/index.php?title=Tvirtumas&action=edit&redlink=1" class="new" title="Tvirtumas (puslapis neegzistuoja)">tvirtumu</a>. Kai kurios sintetinės dervos yra tarpinis cheminis produktas, iš kurio gaminamos kitos medžiagos. Pavyzdžiui, iš <a href="/wiki/Akmens_anglis" title="Akmens anglis">akmens anglies</a> gaminant <a href="/wiki/Koksas" title="Koksas">koksą</a> išsiskiria koksavimo dujos, kurias sukondensavus gaunama <a href="/w/index.php?title=Anglies_derva&action=edit&redlink=1" class="new" title="Anglies derva (puslapis neegzistuoja)">anglies derva</a>, iš kurios gaminamas <a href="/wiki/Benzolas" class="mw-redirect" title="Benzolas">benzolas</a>, <a href="/wiki/Toluolas" class="mw-redirect" title="Toluolas">toluolas</a>, <a href="/w/index.php?title=Naftalinas&action=edit&redlink=1" class="new" title="Naftalinas (puslapis neegzistuoja)">naftalinas</a>, <a href="/w/index.php?title=Oksolis&action=edit&redlink=1" class="new" title="Oksolis (puslapis neegzistuoja)">oksolis</a> ir kiti gaminiai. </p> <div class="mw-heading mw-heading2"><h2 id="Lietuvoje">Lietuvoje</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=5" title="Redaguoti skyrelį: Lietuvoje" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=5" title="Edit section's source code: Lietuvoje"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lietuvoje dar mūsų eros pradžioje buvo gaminamas <a href="/wiki/Degutas" title="Degutas">degutas</a>, kurį, kaip ir gintarą importuodavo <a href="/wiki/Senov%C4%97s_Roma" title="Senovės Roma">Senovės Roma</a> bei kitos šalys. <a href="/wiki/LDK" class="mw-redirect" title="LDK">Lietuvos Didžiojoje kunigaikštystėje</a> degutininkai buvo atleidžiami nuo kai kurių mokesčių. </p> <div class="mw-heading mw-heading2"><h2 id="Dervų_pavyzdžiai"><span id="Derv.C5.B3_pavyzd.C5.BEiai"></span>Dervų pavyzdžiai</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=6" title="Redaguoti skyrelį: Dervų pavyzdžiai" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=6" title="Edit section's source code: Dervų pavyzdžiai"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Bi%C4%8Di%C5%B3_pikis" title="Bičių pikis">Bičių pikis</a></li> <li><a href="/wiki/Gintaras" title="Gintaras">Gintaras</a></li> <li><a href="/w/index.php?title=Kanifolija&action=edit&redlink=1" class="new" title="Kanifolija (puslapis neegzistuoja)">Kanifolija</a></li> <li><a href="/wiki/Bitumas" title="Bitumas">Bitumas</a></li> <li><a href="/wiki/Degutas" title="Degutas">Degutas</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Etimologija">Etimologija</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=7" title="Redaguoti skyrelį: Etimologija" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=7" title="Edit section's source code: Etimologija"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lietuviškas žodis <i>derva</i> reiškia ne tik tam tikras medžiagas iš medžių, bet ir (1) 'pliauska skaloms skelti', (2) 'skala, šakalys', (3) 'pušies ar eglės kelmas, iš kurio varo (dega) <a href="/wiki/Degutas" title="Degutas">degutą</a>', (4) 'medžio sakai' ar 'pikis'. Jis giminingas <a href="/wiki/Lietuvi%C5%B3_kalba" title="Lietuvių kalba">liet.</a> <i>drevė</i> 'išpuvusi kiaurymė medyje', <a href="/wiki/Rus%C5%B3_kalba" title="Rusų kalba">rus.</a> <i>дерево</i> 'medis' ir hipotetinėms indoeuropietiškoms šaknims *<i>doru</i>- ir *<i>derwo</i>-<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>. Pagal M. fon Vasmerį <a href="/wiki/Rus%C5%B3_kalba" title="Rusų kalba">rus.</a> <i>дерево</i> 'medis' giminingas <a href="/wiki/Lietuvi%C5%B3_kalba" title="Lietuvių kalba">liet.</a> <i>derva</i>, <a href="/wiki/Latvi%C5%B3_kalba" title="Latvių kalba">latv.</a> <i>darva</i> 'derva', anglosaksų <i>teru</i> 'derva'<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Jis taip pat giminingas žodžiams: </p> <ul><li><a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>tar</i> 'degutas' (iš sen.<a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>teoru</i> 'degutas'; artimas vid. vokiečių žemaičių <i>tere</i> 'degutas', vid. oland. <i>tar, terre</i>)<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>. <a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>tar</i> 'degutas' spėjamai kilęs iš progermaniško *terwo, kuris kilęs iš *<i>trewan</i>, iš kurio kilęs ir <a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>tree</i> 'medis'.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>tree</i> 'medis' (iš sen.<a href="/wiki/Angl%C5%B3_kalba" title="Anglų kalba">angl.</a> <i>trēow</i>; artimas sen.<a href="/wiki/Fryz%C5%B3_kalba" class="mw-redirect" title="Fryzų kalba">fryzų</a> ir sen.norm. <i>trē</i> 'medis', sen.saksų <i>trio, treo</i> 'medis', gotų <i>triu</i> 'medis', gr. drys 'medis', <a href="/wiki/Sanskritas" title="Sanskritas">sanskr</a>. <i>dāru</i> 'mediena; miškas')<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>. <i>Tree</i> giminystė su <a href="/wiki/Lietuvi%C5%B3_kalba" title="Lietuvių kalba">liet.</a> <i>derva</i> 'smalingas medis; derva, degutas' nurodoma ir Čamberso etimologijos žodyne<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Šaltiniai"><span id=".C5.A0altiniai"></span>Šaltiniai</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Derva&veaction=edit&section=8" title="Redaguoti skyrelį: Šaltiniai" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Derva&action=edit&section=8" title="Edit section's source code: Šaltiniai"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.physics.uq.edu.au/physics_museum/pitchdrop.shtml">R. Edgeworth, B. J. Dalton and T. Parnell. The Pitch drop experiment</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><i>Iliustruota faktopedija.</i> Vilnius: Alma littera, 2000, 69 p. <a href="/wiki/Specialus:Knyg%C5%B3_%C5%A1altiniai/9986028957" class="internal mw-magiclink-isbn">ISBN 9986-02-895-7</a>.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a href="/wiki/Zenonas_Ma%C4%8Dionis" title="Zenonas Mačionis">Zenonas Mačionis</a>. <i>Derva</i>. <a href="/wiki/Visuotin%C4%97_lietuvi%C5%B3_enciklopedija" title="Visuotinė lietuvių enciklopedija">Visuotinė lietuvių enciklopedija</a>, T. IV (Chakasija-Diržių kapinynas). – Vilnius: Mokslo ir enciklopedijų leidybos institutas, 2003. 632 psl.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">[Buck CD (1949) A Dictionary of Selected Synonyms in the Principal Indo-European Languages. straipsnis „1.42 Tree“ (48 psl.)</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">Фасмер М. (2003) Этимологический словарь русского языка. 4-ое изд.</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://unabridged.merriam-webster.com/cgi-bin/unabridged?va=tar&x=11&y=6">"tar. " Webster’s Third New International Dictionary, Unabridged. Merriam-Webster, 2002. http://unabridged.merriam-webster.com (1 Jan. 2008).</a><sup><a href="/wiki/Vikipedija:I%C5%A1orin%C4%97s_nuorodos" title="Vikipedija:Išorinės nuorodos">[neveikianti nuoroda]</a></sup></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text">Barnhart RH, ed. (1988) Chambers Dictionary of Etymology – straipsnis „Tar“ (1116 psl.)</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://unabridged.merriam-webster.com/cgi-bin/unabridged?va=tree&x=34&y=8">"tree. " Webster’s Third New International Dictionary, Unabridged. Merriam-Webster, 2002. http://unabridged.merriam-webster.com (1 Jan. 2008)</a><sup><a href="/wiki/Vikipedija:I%C5%A1orin%C4%97s_nuorodos" title="Vikipedija:Išorinės nuorodos">[neveikianti nuoroda]</a></sup></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text">Barnhart RH, ed. (1988) Chambers Dictionary of Etymology – straipsnis „Tree“ (1164 psl.)</span> </li> </ol> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Rodomas puslapis "<a dir="ltr" href="https://lt.wikipedia.org/w/index.php?title=Derva&oldid=6491969">https://lt.wikipedia.org/w/index.php?title=Derva&oldid=6491969</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Specialus:Kategorijos" title="Specialus:Kategorijos">Kategorija</a>: <ul><li><a href="/wiki/Kategorija:Dervos" title="Kategorija:Dervos">Dervos</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Paslėptos kategorijos: <ul><li><a href="/wiki/Kategorija:Straipsniai_su_neveikian%C4%8Diomis_nuorodomis" title="Kategorija:Straipsniai su neveikiančiomis nuorodomis">Straipsniai su neveikiančiomis nuorodomis</a></li><li><a href="/wiki/Kategorija:Puslapiai,_naudojantys_ISBN_magi%C5%A1kas_nuorodas" title="Kategorija:Puslapiai, naudojantys ISBN magiškas nuorodas">Puslapiai, naudojantys ISBN magiškas nuorodas</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Šis puslapis paskutinį kartą keistas 14 vasario 2022 19:39.</li> <li id="footer-info-copyright">Tekstas pateikiamas pagal <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution/Share-Alike Licenciją</a>; gali būti taikomos papildomos sąlygos. 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