prothrombin
noun
prothrombin is spelled P-R-O-T-H-R-O-M-B-I-N: 11 letters. It appears about once in every 13 million words in written English, the 109,062nd most frequent word form (wordfreq, 2021 data). As a noun, prothrombin means “A glycoprotein, produced in the liver, that is converted into thrombin during bleeding and subsequent clotting” (English Wiktionary, September 2026). The plural of prothrombin is prothrombins.
How many letters and syllables are in prothrombin?
| Letters | 11: P-R-O-T-H-R-O-M-B-I-N |
|---|---|
| In writing | about once in every 13 million words; the 109,062nd 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 prothrombin?
Prothrombin appears about once in every 13 million words in written English, the 109,062nd 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 prothrombin
- prothrombins plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does prothrombin mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A glycoprotein, produced in the liver, that is converted into thrombin during bleeding and subsequent clotting.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Prothrombin in Spanish, French, German and Portuguese
In the sense glycoprotein:
| Language | Words |
|---|---|
| French | prothrombine |
| Portuguese | protrombina |
| Spanish | protrombina |
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 prothrombin come from?
From pro- + thrombin.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).