methanogen /meth·a·no·gen/ (meth´ah-nah-jen″) an anaerobic microorganism that grows in the presence of carbon dioxide and produces methane gas. Methanogens are found in the stomach of cows, in swamp mud, and in other environments in which oxygen is not present.
meth·an·o·gen (m -th n  -jn, -jn )n. Any of various anaerobic methane-producing bacteria belonging to the family Methanobacteriaceae. |
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