phenytoin
/fəˈnɪt.oʊ.ɪn/noun
phenytoin is spelled P-H-E-N-Y-T-O-I-N: 9 letters and 4 syllables. It appears about once in every 9 million words in written English, the 87,317th most frequent word form (wordfreq, 2021 data). As a noun, phenytoin means “A synthetic compound related to hydantoin, used as an anticonvulsant in the treatment of epilepsy” (English Wiktionary, September 2026).
How many letters and syllables are in phenytoin?
| Letters | 9: P-H-E-N-Y-T-O-I-N |
|---|---|
| Syllables | 4 (from its pronunciation) |
| In writing | about once in every 9 million words; the 87,317th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is phenytoin?
Phenytoin appears about once in every 9 million words in written English, the 87,317th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce phenytoin?
- UK /fɛˈnɪt.əʊ.ɪn/
- US /fəˈnɪt.oʊ.ɪn/
Phenytoin has 4 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does phenytoin mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A synthetic compound related to hydantoin, used as an anticonvulsant in the treatment of epilepsy.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does phenytoin come from?
Contraction of diphenylhydantoin.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).