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Definition of Coal gas
1. Noun. Gaseous mixture produced by distillation of bituminous coal and used for heating and lighting.
Definition of Coal gas
1. Noun. (petrochemistry) The poisonous gas, used domestically for cooking etc and formerly for lighting, prepared by heating coal with steam; it is a mixture of hydrogen and carbon monoxide; synthesis gas or town gas. ¹
¹ Source: wiktionary.com