Hydantoin
Pronunciation : Hy*dan"to*in
Part of Speech : n.
Etymology : [Hydrogen + allantion.] (Chem.)
Definition : Defn: A derivative of urea, C3H4N2O2, obtained from allantion, as a white, crystalline substance, with a sweetish taste; -- called also glycolyl urea.
Source : Webster's Unabridged Dictionary, 1913