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Definition of Diphenylhydantoin
1. Noun. An anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative. 
Medical Definition of Diphenylhydantoin
1. See: phenytoin. (05 Mar 2000)
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1. Noun. An anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative. 
1. See: phenytoin. (05 Mar 2000)