proline.
A nonessential amino acid C₅H₉NO₂ found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.
Meaning & usage
A nonessential amino acid C₅H₉NO₂ found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.
Where this word comes from
Etymology tree Proto-Indo-European *péh₂wr̥ Proto-Hellenic *pāwər Ancient Greek πῦρ (pûr) Proto-Indo-European *-rós Proto-Hellenic *-rós Ancient Greek -ρός (-rós) Ancient Greek πῠρρός (pŭrrhós)der. German Pyrrolbor. English pyrrole English -olidine English pyrrolidine English proline Short for pyrrolidine.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.