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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/ˈpɛptaɪd/
Southern-England:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:P EH1 P T AY2 D
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Any of a class of organic compounds consisting of various numbers of amino acids in which the amine of one is reacted with the carboxylic acid of the next to form an amide bond. Such molecules joined into polypeptides and proteins constitute crucial components of living organisms.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
Performance-enhancing drugs that contain such molecules, especially particular ones (often synthetically produced) that are claimed by their sellers to bestow amazing health benefits.
Definition source: English Wiktionary via Wiktextract
Usage: euphemistic, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Etymology tree 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 From peptone, partially hydrolyzed protein, or German Peptid, from German Pepton, from Ancient Greek πεπτόν (peptón, “cooked, digested”) derived from πέπτω (péptō, “soften, ripen, boil, cook, bake, digest”).
Across languages
Translations
32 source translations are retained for this English entry.
Armenian:
պեպտիդ
(peptid)
— class of organic compounds
Bulgarian:
пепти́д
(peptíd)
— class of organic compounds
Catalan:
pèptid
— class of organic compounds
Chinese Cantonese:
肽
(taai3)
— class of organic compounds
Chinese Mandarin:
肽
(tài)
— class of organic compounds
Czech:
peptid
— class of organic compounds
Danish:
peptid
— class of organic compounds
Esperanto:
peptido
— class of organic compounds
Finnish:
peptidi
— class of organic compounds
French:
peptide
— class of organic compounds
Galician:
péptido
— class of organic compounds
German:
Peptid
— class of organic compounds
Greek:
πεπτίδιο
(peptídio)
— class of organic compounds
Icelandic:
peptíð
— class of organic compounds
Ido:
peptido
— class of organic compounds
Italian:
peptide
— class of organic compounds
Japanese:
ペプチド
(pepuchido)
— class of organic compounds
Khmer:
ប៉ិបទីត
(pəptiit)
— class of organic compounds
Korean:
펩타이드
(peptaideu)
— class of organic compounds
Korean:
펩티드
(peptideu)
— class of organic compounds
Māori:
pētini
— class of organic compounds
Māori:
pepetai
— class of organic compounds
Polish:
peptyd
— class of organic compounds
Portuguese:
peptídeo
— class of organic compounds
Portuguese:
peptídio
— class of organic compounds
Portuguese:
péptido
— class of organic compounds
Portuguese:
peptido
— class of organic compounds
Romanian:
peptidă
— class of organic compounds
Russian:
пепти́д
(peptíd)
— class of organic compounds
