pyrrolidine
noun
pyrrolidine is spelled P-Y-R-R-O-L-I-D-I-N-E. The wrong spelling people search most is pyrolidine: about 20 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 14 of all searches for the word. Pyrrolidine is a noun meaning “Any of a class of heterocyclic amines having a saturated five-membered ring; especially the parent compound…”. The plural of pyrrolidine is pyrrolidines.
How many letters and syllables are in pyrrolidine?
| Letters | 11: P-Y-R-R-O-L-I-D-I-N-E |
|---|---|
| In writing | about once in every 36 million words; the 184,844th most frequent word form |
| Wrong spellings searched | 2; the most searched, pyrolidine, about 20 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 pyrrolidine?
Pyrrolidine is spelled P-Y-R-R-O-L-I-D-I-N-E. 2 wrong spellings are searched or written often enough to measure; together they are about 1 in 10 of the searches for pyrrolidine 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 pyrrolidine?
Pyrrolidine appears about once in every 36 million words in written English, the 184,844th 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 pyrrolidine
- pyrrolidines plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does pyrrolidine mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any of a class of heterocyclic amines having a saturated five-membered ring; especially the parent compound of this class, C₄H₉N.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does pyrrolidine come from?
From pyrrole + -olidine.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).