# cytokine

> English word · Noun · IPA /ˈsaɪ.tə(ʊ)(ˌ)kaɪn/ · frequency rank #43,101

## Definitions
1. Any of various small regulatory proteins that regulate the cells of the immune system.

## Etymology
From cyto- + -kine from Ancient Greek κίνησις (kínēsis, “movement”).

## Common misspellings (12)
`ccytokine`, `ctyokine`, `cyotkine`, `cytkoine`, `cytoikne`, `cytokien`, `cytokinne`, `cytokkine`, `cytoknie`, `cyttokine`, `cyytokine`, `yctokine`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/cytokine