dehydro-

prefix

Used to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds

OriginEnglish hydro- ← Ancient Greek ῠ̔δρο- (hŭdro-) ← Proto-Hellenic *údōr →
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Meanings

prefix
  1. chemistryUsed to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds

Origin

  1. Proto-Indo-European*de
  2. Proto-Indo-European*déh₁
  3. Proto-Italic*dē
  4. Latindē
  5. Latindē-
  6. Englishde-
  7. Proto-Indo-European*wed-
  8. Proto-Indo-European*wódr̥
  9. Proto-Hellenic*údōr
  10. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  11. Ancient Greekῠ̔δρο- (hŭdro-)
  12. Englishhydro-
  13. Englishdehydro-

From de- + hydro-.

Full word history & related roots →

Translations

French déshydro-
  • déshydro-used to form the names of compounds that have lost one or more hydrogen atoms
Cite this entry
APA

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

MLA

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

Chicago

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

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