hydro-

US/ˈhaɪ.dɹoʊ/US[ˈhaɪ.dɹoʊ]US, sometimes[ˈhaɪ.d͡ʒɹoʊ]

prefix

water

Similar

Meanings

prefix

alternative before vowel hydr-

  1. water

    Synonyms: aqua-

  2. chemistryhydrogen
  3. chemistrya hydrous compound
  4. biologyHydrozoa

Synonyms & antonyms

prefixwater

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Also see

Origin

  1. Proto-Indo-European*wed-
  2. Proto-Indo-European*wódr̥
  3. Proto-Hellenic*údōr
  4. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  5. Ancient Greekῠ̔δρο- (hŭdro-)
  6. Englishhydro-

Learned borrowing from Ancient Greek ῠ̔δρο- (hŭdro-), from ῡ̆̔́δωρ (hū̆́dōr, “water”), from Proto-Hellenic *údōr, from Proto-Indo-European *wódr̥, from *wed- + *-r̥.

Full word history & related roots →

Translations

Catalan hidro-
  • hidro-pertaining to water
Czech hydro-, vodo-
  • hydro-pertaining to water
  • vodo-pertaining to water
Danish hydro-
  • hydro-pertaining to water
Finnish hydro-
  • hydro-pertaining to water
French hydro-
  • hydro-pertaining to water
German hydro-, wasser-
  • hydro-pertaining to water
  • wasser-pertaining to water
Greek υδρο-
  • υδρο- (ydro-)pertaining to water
Hindi जल-, उद-
  • जल- (jal-)pertaining to water
  • उद- (ud-)pertaining to water
Italian idro-
  • idro-pertaining to water
Polish hydro-
  • hydro-pertaining to water
Portuguese hidro-
  • hidro-pertaining to water
Russian гидро-, водо-
  • гидро- (gidro-)pertaining to water
  • водо- (vodo-)pertaining to water
Spanish hidro-
  • hidro-pertaining to water
Cite this entry
APA

hydro-. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/hydro-

MLA

“hydro-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hydro-. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “hydro-,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/hydro-.

Source: hydro- on Wiktionary, CC BY-SA 4.0.