Etymology

hydroquinone

H4Y4D2R1O1Q10U1I1N1O1N1E1

Today it means: The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol. Full definition →

English quinone ← German Keton ← Ancient Greek ῠ̔δρο- (hŭdro-)
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The story

  1. Proto-Indo-European*wed-
  2. Proto-Indo-European*wódr̥
  3. Proto-Hellenic*údōr
  4. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  5. Ancient Greekῠ̔δρο- (hŭdro-)
  6. Englishhydro-
  7. Englishquinine
  8. Englishquinic
  9. GermanKeton
  10. Englishketone
  11. Englishquinone
  12. English todayhydroquinone

From hydro- + quinone.

Etymology from Wiktionary, CC BY-SA 4.0.