flashdamp
The English word “flashdamp” has 1 meaning listed here.
noun
- A mixture of methane, carbon dioxide, and nitrogen that is found in mines, and ignited quickly within a safety lamp, but that is then extinguished quickly due to the exhaust products of the flame. Flashdamp can be heavier than air (called heavy flashdamp) or lighter than air (called light flashdamp), depending on the proportion of carbon dioxide.
Etymology
From flash + damp, with 'damp' having the meaning of 'gas', as in old German, modern Dutch, and Danish.
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.