| NOUN | animal | methanogen | archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane |
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| Meaning | archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas. | |
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| Broader | archaebacteria, archaebacterium, archaeobacteria, archeobacteria | Considered ancient life forms that evolved separately from bacteria and blue-green algae |
| Spanish | metanógeno | |
| Catalan | metanogen | |
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