# laughing gas

> English word · Noun

## Definitions
1. Nitrous oxide, especially when used as an anaesthetic.

## Etymology
From its euphoric effects. Coined by British chemist Humphry Davy in 1799.

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