# effector

> English word · Noun · frequency rank #46,439

## Definitions
1. Any muscle, organ etc. that can respond to a stimulus from a nerve.
2. The part of a nerve that carries a stimulus to a muscle etc.
3. Any small molecule that effects the function of an enzyme by binding to an allosteric site.
4. An actuator.

## Etymology
From effect + -or.

## Easily confused with
- **effects** (https://plainspell.com/en/vs/effector-vs-effects)
- **elector** (https://plainspell.com/en/vs/effector-vs-elector)
- **effect** (https://plainspell.com/en/vs/effect-vs-effector)
- **effected** (https://plainspell.com/en/vs/effected-vs-effector)

## Common misspellings (10)
`efector`, `efefctor`, `effcetor`, `effecctor`, `effecotr`, `effectorr`, `effectro`, `effecttor`, `effetcor`, `fefector`

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