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 (fĕn′ĭ-tō′ĭn, fə-nĭt′ō-)
An anticonvulsant drug, C15H12N2O2, used to treat epilepsy, often in the form of its sodium salt. Also called diphenylhydantoin.



(Pharmacology) an anticonvulsant drug used in the management of epilepsy and in the treatment of abnormal heart rhythms. Formula: C15H11N2O2Na. Also called: diphenylhydantoin sodium
[C20: from (di)pheny(lhydan)toin]


(ˌfɛn ɪˈtoʊ ɪn, fəˈnɪt oʊ-)

a barbiturate-related substance, C15H12N2O2, used as an anticonvulsant in the treatment of epilepsy.
[1940–45; shortening of diphenylhydantoin= di-1 + phenyl + hydantoin a crystalline derivative of imidazole]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phenytoin - an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative
hydantoin - any of a group of anticonvulsant drugs used in treating epilepsy


n fenitoína
References in periodicals archive ?
Comparative carcinogenicity of 5,5-diphenylhydantoin with or without perinatal exposure in rats and mice.
Hydantoin ring glucuronidation: characterization of a new metabolite of 5,5-diphenylhydantoin in man and rat.
Pigment yellow 12 6358-85-6 dbe 1,2-Dibromoethane 106-93-4 dcv Dichlorvos 62-73-7 ddt DDT 50-29-3 deu N,N'-Diethylthiourea 105-55-5 dhm Diphenhydramine [multiplied by] HCI 147-24-0 dhx Di(2-ethylhexyl)phthalate 117-81-7 die Dieldrin 60-57-1 dio 1,4-Dioxane 123-91-1 dis Tetraethylthiuram disulfide 97-77-8 dmz 3,3'-Dimethylbenzidine [multiplied by] 2HCI 612-82-8 dph 5,5-Diphenylhydantoin 57-41-0 dr9 D & C Red No.