# histamine

> English word · Noun · IPA /ˈhɪstəmiːn/ · frequency rank #44,842

## Definitions
1. An amine, C₅H₉N₃, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions.

## Etymology
From hist(idine) + -amine.

## Common misspellings (13)
`hhistamine`, `hisatmine`, `hisstamine`, `histaimne`, `histamien`, `histaminne`, `histammine`, `histamnie`, `histmaine`, `histtamine`, `hitsamine`, `hsitamine`, `ihstamine`

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