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class="selectorItem--S2kay">name</div></a><a href="/search?q=hydro-&type=2"><div class="selectorItem--S2kay">phrase</div></a><a href="/search?q=hydro-&type=3"><div class="selectorItem--S2kay">suffix</div></a><a href="/search?q=hydro-&type=4"><div class="selectorItem--S2kay">prefix</div></a><a href="/search?q=hydro-&type=5"><div class="selectorItem--S2kay">word root</div></a><div class="underline--2GdPQ"></div></div>31 entries found.</div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydro-" href="/word/hydro-#etymonline_v_41065">hydro-<!-- -->聽<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>before vowels <span class="foreign notranslate">hydr-</span>, word-forming element in compounds of Greek origin, meaning "water," from Greek <span class="foreign notranslate"><em>hydro</em>-</span>, combining form of <span class="foreign notranslate">hydor</span> "water" (from suffixed form of PIE root <a href="/word/*wed-#etymonline_v_52591" title="Etymology, meaning and definition of *wed- " rel="nofollow" class="crossreference notranslate">*wed-</a> (1) "water; wet"). Also sometimes a combining form of <a href="/word/hydrogen" title="Etymology, meaning and definition of hydrogen " class="crossreference notranslate">hydrogen</a>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydro-#etymonline_v_41065"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div data-ad-container="true" class="adContainer--6CVz1 vertical" style="margin-top:1em"><span class="adLabel--35hfi">Advertisement</span><div id="div-gpt-ad-pc-sp-infeed-1" style="min-width:728px;min-height:90px"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydro" href="/word/hydro#etymonline_v_40437">hydro<!-- -->聽<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>short for <a href="/word/hydro-electric" title="Etymology, meaning and definition of hydro-electric " class="crossreference notranslate"><em>hydro-electric</em></a>, from 1916.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydro#etymonline_v_40437"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydro-electric" href="/word/hydro-electric#etymonline_v_16106">hydro-electric<!-- -->聽<!-- -->(adj.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>also <span class="foreign notranslate">hydroelectric</span>, 1827, "produced by a galvanic cell battery," which uses liquid, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> "water" + <a href="/word/electric" title="Etymology, meaning and definition of electric " class="crossreference notranslate">electric</a>. Meaning "generating electricity by force of moving water" is from 1884. Related: <span class="foreign notranslate">Hydroelectricity</span>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydro-electric#etymonline_v_16106"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrocortisone" href="/word/hydrocortisone#etymonline_v_51222">hydrocortisone<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>also <span class="foreign notranslate"><em>hydro</em>-cortisone</span>, 1951, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/cortisone" title="Etymology, meaning and definition of cortisone " class="crossreference notranslate">cortisone</a>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrocortisone#etymonline_v_51222"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydroxide" href="/word/hydroxide#etymonline_v_34480">hydroxide<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>1830, from French <span class="foreign notranslate">hydroxide</span>; see <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/oxide" title="Etymology, meaning and definition of oxide " class="crossreference notranslate">oxide</a>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydroxide#etymonline_v_34480"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div data-ad-container="true" class="adContainer--6CVz1 vertical" style="margin-top:1em"><span class="adLabel--35hfi">Advertisement</span><ins class="adsbygoogle" data-ad-client="ca-pub-7093273770345366" style="display:block;width:100%" data-ad-slot="5022190299" data-ad-format="auto" data-full-width-responsive="true"></ins></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrogeology" href="/word/hydrogeology#etymonline_v_51223">hydrogeology<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>also <span class="foreign notranslate"><em>hydro</em>-geology</span>, 1802, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/geology" title="Etymology, meaning and definition of geology " class="crossreference notranslate">geology</a>; modeled on French <span class="foreign notranslate">hydrog茅ologie</span>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrogeology#etymonline_v_51223"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrography" href="/word/hydrography#etymonline_v_42172">hydrography<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>"science of the measurement and description of the sea," 1550s, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/-graphy" title="Etymology, meaning and definition of -graphy " class="crossreference notranslate">-graphy</a>. Related: <span class="foreign notranslate">Hydrographic</span>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrography#etymonline_v_42172"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrous" href="/word/hydrous#etymonline_v_51227">hydrous<!-- -->聽<!-- -->(adj.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>"containing water," 1812; see <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/-ous" title="Etymology, meaning and definition of -ous " class="crossreference notranslate">-ous</a>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrous#etymonline_v_51227"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrology" href="/word/hydrology#etymonline_v_34473">hydrology<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>"the science of water," 1762, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> + <a href="/word/-logy" title="Etymology, meaning and definition of -logy " class="crossreference notranslate">-logy</a>. Related: <span class="foreign notranslate">Hydrologist</span>; <span class="foreign notranslate">hydrological</span> (1660s).</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrology#etymonline_v_34473"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="word--C9UPa word_4pc--2SZw8"><div><a class="word__name--TTbAA word_thumbnail__name--1khEg" style="margin-bottom:5px;display:block" title="Origin and meaning of hydrotherapy" href="/word/hydrotherapy#etymonline_v_34478">hydrotherapy<!-- -->聽<!-- -->(n.)<span class="word_thumbnail__name_icon--2RFFN"><i class="fa fa-chevron-right" style="font-size:16px"></i></span></a><div class="word__etymology_expand--1s7tE"><section class="word__defination--2q7ZH undefined"><div></div><p>1842, from <a href="/word/hydro-" title="Etymology, meaning and definition of hydro- " class="crossreference notranslate"><em>hydro-</em></a> "water" + <a href="/word/therapy" title="Etymology, meaning and definition of therapy " class="crossreference notranslate">therapy</a>. Related: <span class="foreign notranslate">Hydrotherapeutic</span>.</p></section></div></div><a data-more="true" class="word_4pc__footer--2yfj3" href="/word/hydrotherapy#etymonline_v_34478"><span>Related entries & more</span>聽<i class="fa fa-chevron-right" style="opacity:0"></i></a><div style="clear:both"></div></div><div class="pagination_simple--1ilDd"><a style="visibility:hidden" title="prev" class="pagination_simple_prev--1rWzQ" role="button" href="/search?page=0&q=hydro-&type="><i class="fa fa-2x fa-angle-left" aria-hidden="true"></i></a><a title="next" role="button" href="/search?page=2&q=hydro-&type=">Next</a><a style="visibility:visible" title="next" class="pagination_simple_next--3KB2t" role="button" href="/search?page=2&q=hydro-&type="><i class="fa fa-2x fa-angle-right" aria-hidden="true"></i></a></div><ul class="ant-pagination pagination--1DEpf" unselectable="unselectable"><li title="Previous Page" tabindex="0" class="ant-pagination-disabled ant-pagination-prev" 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