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phenytoin

[ fen-i-toh-in, fuh-nit-oh- ]
/ ˌfɛn ɪˈtoʊ ɪn, fəˈnɪt oʊ- /

noun Pharmacology.

a barbiturate-related substance, C15H12N2O2, used as an anticonvulsant in the treatment of grand mal epilepsy and in focal seizures.

Nearby words

  1. phenylpropanolamine,
  2. phenylpropyl acetate,
  3. phenylpyruvic oligophrenia,
  4. phenylthiocarbamide,
  5. phenylthiourea,
  6. pheo-,
  7. pheochrome,
  8. pheochromocyte,
  9. pheochromocytoma,
  10. pheon

Origin of phenytoin

1940–45; (di)pheny(lhydan)toin, its full chemical name; see di-1, phenyl, hydantoin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for phenytoin

phenytoin

/ (ˌfɛnɪˈtəʊɪn) /

noun

an anticonvulsant drug used in the management of epilepsy and in the treatment of abnormal heart rhythms. Formula: C 15 H 11 N 2 O 2 NaAlso called: diphenylhydantoin sodium

Word Origin for phenytoin

C20: from (di) pheny (lhydan) toin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for phenytoin

phenytoin

[ fĕn′ĭ-tō′ĭn, fə-nĭt′ō- ]

n.

An anticonvulsant drug chemically related to the barbiturates and used most commonly in the treatment of epilepsy.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.