1. A mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air

Derived forms: firedamps

Type of: gas

Encyclopedia: Firedamp

• sodding
• soddy
• sodium
• sodium benzoate
• sodium bicarbonate
• sodium bichromate
• sodium carbonate
• sodium carboxymethyl cellulose
• sodium chlorate
• sodium chloride
• sodium cyanide
• sodium dichromate
• sodium ethylmercurithiosalicylate
• sodium fluoride
• sodium hydride
• sodium hydrogen carbonate
• sodium hydroxide
• sodium hypochlorite
• sodium iodide
• sodium lauryl sulfate
• sodium lauryl sulphate
• sodium nitrate
• sodium nitrite
• sodium orthophosphate
• sodium phosphate