IPA: //ˈfaɪərˌdæmp//
KK: /ˈfaɪərˌdæmp/
A type of gas that is flammable and mainly made of methane, often found in coal mines due to the breakdown of coal.
The miners were trained to detect firedamp to prevent explosions in the mine.
Firedamp is formed from "fire" (from Old English "fyr", meaning combustion or flame) and "damp" (from Middle Dutch "damp", meaning vapor or gas). The term refers to a flammable gas found in coal mines, which can ignite and cause explosions when mixed with air.
Think of 'fire' as a flame and 'damp' as a gas or vapor — together, they describe a dangerous gas that can ignite.
No commonly confused words.