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Meaning of biogas

bi•o•gas

Pronunciation: (bī'ō-gas"), [key]
— n.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.