Meanings
nounhydantoin (plural hydantoins)
plural hydantoins
- chemistryThe heterocycle imidazolidine-2,4-dione derived from urea and glycolic acid; any of its many derivatives
Origin
- Proto-Indo-European*wed-
- Proto-Indo-European*wódr̥
- Proto-Hellenic*údōr
- Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
- Ancient Greekὑδρο- (hudro-)
- Frenchhydro-
- Proto-Indo-European*ǵenh₁-
- Proto-Indo-European*ǵénh₁os
- Proto-Hellenic*génos
- Ancient Greekγένος (génos)
- Frenchhydrogène
- Englishhydrogen
- Englishhydrogenation
- Ancient Greekᾰ̓λλᾶς (ăllâs)
- Englishallanto-
- Englishallantoin
- Englishhydantoin
From hydrogenation and allantoin.
Full word history & related roots →Cite this entry
APA
hydantoin. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/hydantoin
MLA
“hydantoin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hydantoin. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “hydantoin,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/hydantoin.
Source: hydantoin on Wiktionary, CC BY-SA 4.0.