# serotonin

> English word · Noun · IPA /ˌsɛɹəˈtəʊnɪn/ · frequency rank #20,769

## Definitions
1. An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.

## Etymology
From sero- + tone + -in.

## Common misspellings (13)
`esrotonin`, `seortonin`, `serootnin`, `serotnoin`, `serotoinn`, `serotoninn`, `serotonni`, `serotonnin`, `serottonin`, `serrotonin`, `sertoonin`, `sreotonin`, `sserotonin`

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