Definition of phenytoin in English:
 phenytoin
noun fɛˈnɪtəʊɪnˌfeniˈtō-in
mass nounMedicine A synthetic compound related to hydantoin, used as an anticonvulsant in the treatment of epilepsy.
 Example sentencesExamples
-  Magnesium sulfate has been shown to be superior to phenytoin and diazepam for the treatment of eclamptic seizures.
 -  The anticonvulsant drugs phenytoin and valproic acid appear to interfere with folate absorption.
 -  Drugs called anti-convulsants, such as phenytoin and valproic acid, are used to stop the involuntary action of the diaphragm.
 -  Anticonvulsant medications, including phenobarbital, valproic acid, phenytoin, and carbamazepine, have a significant lowering effect on carnitine levels.
 -  Anticonvulsants, such as phenytoin and carbamazepine, may be given to control epileptic fits.
 
Origin
  
1940s: blend of phenyl and hydantoin.