pyrroline
noun
pyrroline is spelled P-Y-R-R-O-L-I-N-E: 9 letters. It appears about once in every 87 million words in written English, the 297,763rd most frequent word form (wordfreq, 2021 data). As a noun, pyrroline means “Any of three isomeric monounsaturated heterocycles having a five-membered ring and one nitrogen atom C₄H₇N; any derivative of these compounds” (English Wiktionary, September 2026). The plural of pyrroline is pyrrolines.
How many letters and syllables are in pyrroline?
| Letters | 9: P-Y-R-R-O-L-I-N-E |
|---|---|
| In writing | about once in every 87 million words; the 297,763rd 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 pyrroline?
Pyrroline appears about once in every 87 million words in written English, the 297,763rd 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 pyrroline
- pyrrolines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does pyrroline mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any of three isomeric monounsaturated heterocycles having a five-membered ring and one nitrogen atom C₄H₇N; any derivative of these compounds
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does pyrroline come from?
From pyrrole + -ine.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).