peptide
/ˈpɛptaɪd/noun
peptide is spelled P-E-P-T-I-D-E. The wrong spelling people search most is petide: about 30 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 417 of all searches for the word. Peptide is a noun meaning “Any of a class of organic compounds consisting of various numbers of amino acids in which the amine of one is…”. The plural of peptide is peptides.
How many letters and syllables are in peptide?
| Letters | 7: P-E-P-T-I-D-E |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 2.0 times per million words; the 19,589th most frequent word form |
| Wrong spellings searched | 1; the most searched, petide, about 30 Bing searches a month (all of them) |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How do you spell peptide?
Peptide is spelled P-E-P-T-I-D-E. One wrong spelling is searched or written often enough to measure; together they are about 1 in 421 of the searches for peptide in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is peptide?
Peptide appears 2.0 times per million words in written English, the 19,589th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce peptide?
- /ˈpɛptaɪd/
Peptide has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-peptide.wav, LL-Q1860_(eng)-Wodencafe-peptide.wav, Wikimedia Commons (author and licence on each file's page).
Forms of peptide
- peptides plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does peptide mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 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.
- 2
The peptide bond itself.
- 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.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Peptide in Spanish, French, German and Portuguese
In the sense class of organic compounds:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does peptide come from?
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”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).