Meaning of firedamp

fire•damp

Pronunciation: (fīr'damp"), [key]
— n. Mining.
  1. a combustible gas consisting chiefly of methane, formed esp. in coal mines, and dangerously explosive when mixed with certain proportions of atmospheric air.
  2. the explosive mixture itself.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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