isotretinoin
/ˌaɪ.soʊˈtɹɛt.ɪˌnoʊ.ɪn/noun
isotretinoin is spelled I-S-O-T-R-E-T-I-N-O-I-N: 12 letters and 6 syllables. It appears about once in every 16 million words in written English, the 121,279th most frequent word form (wordfreq, 2021 data). As a noun, isotretinoin means “A cis isomer of retinoic acid that is a synthetic derivative of vitamin A, inhibits sebaceous gland function and keratinization, and is used in the…” (English Wiktionary, September 2026).
How many letters and syllables are in isotretinoin?
| Letters | 12: I-S-O-T-R-E-T-I-N-O-I-N |
|---|---|
| Syllables | 6 (from its pronunciation) |
| In writing | about once in every 16 million words; the 121,279th 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 isotretinoin?
Isotretinoin appears about once in every 16 million words in written English, the 121,279th 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 isotretinoin?
- UK /ˌʌɪ.sə(ʊ).tɹəˈtɪn.əʊ.ɪn/
- US /ˌaɪ.soʊˈtɹɛt.ɪˌnoʊ.ɪn/
Isotretinoin has 6 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does isotretinoin mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A cis isomer of retinoic acid that is a synthetic derivative of vitamin A, inhibits sebaceous gland function and keratinization, and is used in the treatment of severe inflammatory acne but is contraindicated in pregnancy because of its implication as a cause of birth defects.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does isotretinoin come from?
From iso- + tretinoin.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).