isoleucine
/ˌaɪ.səˈluː.siːn/noun
isoleucine is spelled I-S-O-L-E-U-C-I-N-E: 10 letters. It appears about once in every 12 million words in written English, the 102,771st most frequent word form (wordfreq, 2021 data). As a noun, isoleucine means “An essential amino acid, C₆H₁₃NO₂, isomeric with leucine, found in most animal proteins” (English Wiktionary, September 2026). The plural of isoleucine is isoleucines.
How many letters and syllables are in isoleucine?
| Letters | 10: I-S-O-L-E-U-C-I-N-E |
|---|---|
| In writing | about once in every 12 million words; the 102,771st 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 isoleucine?
Isoleucine appears about once in every 12 million words in written English, the 102,771st 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 isoleucine?
- /ˌaɪ.səˈluː.siːn/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Tesco250-isoleucine.wav, Wikimedia Commons (author and licence on each file's page).
Forms of isoleucine
- isoleucines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does isoleucine mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
An essential amino acid, C₆H₁₃NO₂, isomeric with leucine, found in most animal proteins.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Isoleucine in Spanish, French, German and Portuguese
In the sense essential amino acid; C6H13NO2:
| Language | Words |
|---|---|
| French | isoleucine |
| German | Isoleucin |
| Portuguese | isoleucina |
| Spanish | isoleucina |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does isoleucine come from?
From iso- + leucine.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).