# polypeptide

> English word · Noun · frequency rank #47,268

## Definitions
1. Any polymer of (same or different) amino acids joined via peptide bonds.
2. Any such polymer that is not folded into a secondary structure of a protein.
3. A small protein containing up to 100 amino acids; see also oligopeptide.

## Etymology
From poly- + peptide.

## Common misspellings (17)
`oplypeptide`, `ploypeptide`, `pollypeptide`, `polpyeptide`, `polyepptide`, `polypepitde`, `polypepptide`, `polypeptdie`, `polypeptidde`, `polypeptied`, `polypepttide`, `polypetpide`, `polyppeptide`, `polyppetide`, `polyypeptide`, `poylpeptide`, `ppolypeptide`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/polypeptide