thyroxine
/θaɪˈrɒk.sin/noun
thyroxine is spelled T-H-Y-R-O-X-I-N-E: 9 letters and 3 syllables. It appears about once in every 9 million words in written English, the 90,432nd most frequent word form (wordfreq, 2021 data). As a noun, thyroxine means “A thyroid hormone, with the chemical formula C₁₅H₁₁I₄NO₄, that regulates cell metabolism and growth” (English Wiktionary, September 2026). The plural of thyroxine is thyroxines.
How many letters and syllables are in thyroxine?
| Letters | 9: T-H-Y-R-O-X-I-N-E |
|---|---|
| Syllables | 3 (from its pronunciation) |
| In writing | about once in every 9 million words; the 90,432nd 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 thyroxine?
Thyroxine appears about once in every 9 million words in written English, the 90,432nd 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 thyroxine?
- UK /θaɪˈrɒk.siːn/
- UK /-sɪn/
- US /θaɪˈrɒk.sin/
Thyroxine has 3 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Naomi_Persephone_Amethyst_(NaomiAmethyst)-thyroxine.wav, Wikimedia Commons (author and licence on each file's page).
Forms of thyroxine
- thyroxines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does thyroxine mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A thyroid hormone, with the chemical formula C₁₅H₁₁I₄NO₄, that regulates cell metabolism and growth.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Thyroxine in Spanish, French, German and Portuguese
In the sense thyroid hormone:
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 thyroxine come from?
From thyr- (“thyroid”) + ox- (“oxygen”) + -ine.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).