hydantoinPronunciation: /hʌɪˈdantəʊɪn/Definition of hydantoin noun Chemistry a crystalline compound present in sugar beet and used in the manufacture of some anticonvulsant drugs. A cyclic derivative of urea; chemical formula: C3H4N2O2 Origin: mid 19th century: from Greek hudōr 'water' + allantoic (see allantois) + -in1hydantoin in other Oxford dictionaries Definition of hydantoin in the US English dictionary
