phenytoin

noun phe·nyt·o·in \fə-ˈni-tə-wən\

Definition of PHENYTOIN

: a crystalline anticonvulsant compound C₁₅H₁₂N₂O₂ used in the form of its sodium salt in the treatment of epilepsy —called also diphenylhydantoin

diphenylhydantoin

First Known Use: 1941

Medical Dictionary

noun phe·nyt·o·in \fə-ˈnit-ə-wən\

: an anticonvulsant used often in the form of its sodium salt C₁₅H₁₁N₂NaO₂ to prevent or treat seizures—called also diphenylhydantoin; see dilantin

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