methanogen

/ˈmɛθənədʒən/

Definitions of methanogen

1. noun

   archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas
   type of:

   archaebacteria, archaebacterium, archaeobacteria, archeobacteria

   considered ancient life forms that evolved separately from bacteria and blue-green algae