ALL meanings of methanogen
meth·an·o·gen
M m - noun methanogen any of a diverse group of widely distributed archaebacteria that occur in anaerobic environments, as the intestinal tracts of animals, freshwater and marine sediments, and sewage, and are capable of producing methane from a limited number of substrates, including carbon dioxide and hydrogen, acetate, and methylamines: an important source of natural gas. 1
- noun methanogen A methane-producing bacterium, especially an archaean that reduces carbon dioxide to methane. 1
- noun methanogen an anaerobic microorganism that lives on carbon dioxide and hydrogen and gives off methane, found in swamp sediment, cows' stomachs, etc. 0