Standard Lemma guide

polypeptide

noun · 4 senses · updated from the 2026-07-25 local source snapshot

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.

Sound

Pronunciation

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1

noun

Meaning 1

Any polymer of (same or different) amino acids joined via peptide bonds.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any such polymer that is not folded into a secondary structure of a protein.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A small protein containing up to 100 amino acids; see also oligopeptide.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

a peptide containing 10 to more than 100 amino acids

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: peptide

History

Etymology

Etymology tree Proto-Indo-European *pleh1- Proto-Indo-European *polh1ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- Proto-Indo-European *pekw- Proto-Indo-European *pékw-ye- Proto-Hellenic *péťťō Ancient Greek πέσσω (péssō)bf. Ancient Greek πέπτω (péptō) Ancient Greek πεπτόν (peptón)der. German Peptonbor. English peptone Proto-Indo-European *dheh1-der. Proto-Italic *-iðos Latin -idusder. English -ide ▲ German Pepton ▲ Latin -idusder. German -id German Peptidbor. English peptide English polypeptide From poly- + peptide.

Across languages

Translations

24 source translations are retained for this English entry.

  • Catalan: polipèptid — organic chemistry: any polymer amino acids joined via peptide bonds
  • Chinese Cantonese: 多肽 (do1 taai3) — organic chemistry: any polymer amino acids joined via peptide bonds
  • Chinese Mandarin: 多肽 (duōtài) — organic chemistry: any polymer amino acids joined via peptide bonds
  • Esperanto: polipeptido — organic chemistry: any polymer amino acids joined via peptide bonds
  • Finnish: peptidi — organic chemistry: any polymer amino acids joined via peptide bonds
  • French: polypeptide — organic chemistry: any polymer amino acids joined via peptide bonds
  • Galician: polipeptídeo — organic chemistry: any polymer amino acids joined via peptide bonds
  • Italian: polipeptide — organic chemistry: any polymer amino acids joined via peptide bonds
  • Japanese: ポリペプチド (poripepuchido) — organic chemistry: any polymer amino acids joined via peptide bonds
  • Kazakh: полипептид (polipeptid) — organic chemistry: any polymer amino acids joined via peptide bonds
  • Spanish: polipéptido — organic chemistry: any polymer amino acids joined via peptide bonds
  • Turkish: polipeptit — organic chemistry: any polymer amino acids joined via peptide bonds
  • Chinese Cantonese: 多肽 (do1 taai3) — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • Chinese Mandarin: 多肽 (duōtài) — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • Finnish: polypeptidi — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • French: polypeptide — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • Italian: polipeptide — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • Portuguese: polipeptídeo — biochemistry: any such polymer that is not folded into a secondary structure of a protein
  • Chinese Cantonese: 多肽 (do1 taai3) — biochemistry: a small protein containing up to 100 amino acids
  • Chinese Mandarin: 多肽 (duōtài) — biochemistry: a small protein containing up to 100 amino acids
  • Finnish: polypeptidi — biochemistry: a small protein containing up to 100 amino acids
  • French: polypeptide — biochemistry: a small protein containing up to 100 amino acids
  • Italian: polipeptide — biochemistry: a small protein containing up to 100 amino acids
  • Portuguese: polipeptídeo — biochemistry: a small protein containing up to 100 amino acids