| hydantoin | <chemistry> A derivative of urea, C3H4N2O2, obtained from allantion, as a white, crystalline substance, with a sweetish taste. Synonym: glycolyl urea. Origin: Hydrogen + allantion. Source: Websters Dictionary (01 Mar 1998) |
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| hydantoin racemase | <enzyme> Catalyses the racemization of 5-substituted hydantoins in pseudomonas to their corresponding n-carbamoyl amino acids and ultimately to the corresponding l-amino acid Registry number: EC 5.1.99.- Synonym: hyue protein, hyue gene product (26 Jun 1999) |
| foetal hydantoin syndrome | <syndrome> A foetal syndrome resulting from maternal ingestion of hydantoin analogues (e.g., phenytoin), characterised by growth deficiency, mental deficiency, dysmorphic facies, cleft palate and/or lip, cardiac defects, and abnormal genitalia. (05 Mar 2000) |