# firedamp

> English word · Noun

## Definitions
1. A flammable gas (mostly methane) found in coal mines; forms an explosive mixture with air.

## Etymology
From fire + damp with 'damp' not in the usual sense of 'moist' but old German, modern Dutch, Danish 'damp' as steam or vapour, hence a gas liable to catch fire.

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