We found 23 dictionaries that define the word phenytoin:

General (14 matching dictionaries)

1. phenytoin: Merriam-Webster
2. phenytoin: Oxford Learner's Dictionaries
3. phenytoin: American Heritage Dictionary of the English Language
4. phenytoin: Collins English Dictionary
5. phenytoin: Vocabulary.com
6. Phenytoin, phenytoin: Wordnik
7. phenytoin: Wiktionary
8. phenytoin: Infoplease Dictionary
9. phenytoin: Dictionary.com
10. Phenytoin: Wikipedia, the Free Encyclopedia
11. phenytoin: Rhymezone
12. phenytoin: FreeDictionary.org
13. phenytoin: Mnemonic Dictionary
14. phenytoin: TheFreeDictionary.com

Computing (1 matching dictionary)

15. phenytoin: Encyclopedia

Medicine (7 matching dictionaries)

16. phenytoin: Merriam-Webster Medical Dictionary
17. Dorland's Illustrated Medical Dictionary (No longer online)
18. Medical Dictionary (No longer online)
19. Phenytoin: Merck Manuals
20. online medical dictionary (No longer online)
21. RxList The Internet Drug Index (No longer online)
22. phenytoin: Medical dictionary

Tech (1 matching dictionary)

23. Chemical Fact Sheet (No longer online)

(Note: See phenytoins as well.)

Definitions from Wiktionary (phenytoin) ▸ noun:  (pharmacology) A synthetic compound related to hydantoin, used as an anticonvulsant in the treatment of epilepsy. Similar: fosphenytoin, diphenylhydantoin, mephenytoin, epanutin, primidone, phensuximide, antipyrine, pheniprazine, anticonvulsive, trimethadione, more... Opposite: dissimilar, opposite in effect. Phrases: phenytoin sodium, phenytoin overdose, phenytoin related gingival hyperplasia, more... Adjectives: intravenous, anticonvulsants, oral, free, prophylactic, phenobarbital, unbound, antiepileptic, total, intramuscular, optional Colors:     white,     pink,     orange,     yellow,     blue, more... ▸ Words similar to phenytoin ▸ Usage examples for phenytoin ▸ Idioms related to phenytoin ▸ Wikipedia articles (New!) ▸ Popular adjectives describing phenytoin ▸ Words that often appear near phenytoin ▸ Rhymes of phenytoin ▸ Invented words related to phenytoin