triiodothyronine
noun
triiodothyronine is spelled T-R-I-I-O-D-O-T-H-Y-R-O-N-I-N-E. The wrong spelling people search most is triidothyronine: about 10 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 64 of all searches for the word. Triiodothyronine is a noun meaning “A thyroid hormone, with the chemical formula C₁₅H₁₂I₃NO₄, affecting almost every process in the body…”. The plural of triiodothyronine is triiodothyronines.
How many letters and syllables are in triiodothyronine?
| Letters | 16: T-R-I-I-O-D-O-T-H-Y-R-O-N-I-N-E |
|---|---|
| In writing | about once in every 34 million words; the 178,202nd most frequent word form |
| Wrong spellings searched | 1; the most searched, triidothyronine, about 10 Bing searches a month (all of them) |
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); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How do you spell triiodothyronine?
Triiodothyronine is spelled T-R-I-I-O-D-O-T-H-Y-R-O-N-I-N-E. One wrong spelling is searched or written often enough to measure; together they are about 1 in 64 of the searches for triiodothyronine in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is triiodothyronine?
Triiodothyronine appears about once in every 34 million words in written English, the 178,202nd 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).
Forms of triiodothyronine
- triiodothyronines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does triiodothyronine mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A thyroid hormone, with the chemical formula C₁₅H₁₂I₃NO₄, affecting almost every process in the body, including body temperature, growth, and heart rate.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Triiodothyronine in Spanish, French, German and Portuguese
In the sense thyroid hormone:
| Language | Words |
|---|---|
| Portuguese | triiodotironina |
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 triiodothyronine come from?
From tri- + iodothyronine.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).