Also found in: Medical, Encyclopedia, Wikipedia.
A mixture of methane and carbon dioxide produced by bacterial degradation of organic matter and used as a fuel.
(General Engineering) a gas that is produced by the action of bacteria on organic waste matter: used as a fuel
or bi•o-gas(ˈbaɪ oʊˌgæs)
any gas fuel derived from the decay of organic matter, as the mixture of methane and carbon dioxide produced by the bacterial decomposition of sewage, manure, garbage, or plant crops.
Gas fuel that is obtained from living matter, such as ethanol from sugarcane or methane from decaying organic substances.