polypeptide.
Any polymer of (same or different) amino acids joined via peptide bonds.
Meaning & usage
Any polymer of (same or different) amino acids joined via peptide bonds.
Any such polymer that is not folded into a secondary structure of a protein.
A small protein containing up to 100 amino acids; see also oligopeptide.
Where this word comes from
Etymology tree Proto-Indo-European *pleh₁-der. Proto-Indo-European *polh₁ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- Proto-Indo-European *pekʷ- Proto-Indo-European *pékʷ-ye- Proto-Hellenic *pét͏̌t͏̌ō Ancient Greek πέσσω (péssō)bf. Ancient Greek πέπτω (péptō) Ancient Greek πεπτόν (peptón)der. German Peptonbor. English peptone English -ide ▲ German Pepton Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idusder. German -id German Peptidbor. English peptide English polypeptide From poly- + peptide.
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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.