Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A nonessential amino acid C5H9NO2 found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an amino acid that is found in many proteins (especially collagen)
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: amino acid, aminoalkanoic acid
History
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.
Across languages
18 source translations are retained for this English entry.
