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Related to methanogen: Thermophiles


Any of various anaerobic archaea that produce methane as a metabolic byproduct.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(mɛˈθæn ə dʒən, -ˌdʒɛn)

any of a group of archaebacteria that occur in diverse anaerobic environments and are capable of producing methane from a limited number of chemical sources, as carbon dioxide and hydrogen.
meth•an`o•gen′ic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.methanogen - archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas
archaebacteria, archaebacterium, archaeobacteria, archeobacteria - considered ancient life forms that evolved separately from bacteria and blue-green algae
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References in periodicals archive ?
Pimentel has played an integral role in advancing science's understanding of the gut microbiome including his widely-accepted research on a methanogen as an agent for causing constipation in humans.
"We also don't know if that methane was created from water-rock chemistry like serpentinisation or if it was created by methanogen microbes.
Defaunation and inhibition of archaea: Defaunation and vaccines are mitigation techniques which target the methanogen population of the rumen directly or indirectly, resulting in varying degrees of efficacy (Hook et al., 2010).
The Pearson correlation between specific methanogen genera was obtained using Microsoft Excel 2010.
When a hypolimnion remains anoxic, obligately anaerobic prokaryotic populations, including Archaeal methanogens, presumably increase, but a lake that never has an oxygenated hypolimnion due to salt-induced stratification likely produces more methane because conditions that favor methanogen growth are persistent.
Classification of Identified OTUs in Methanogen mcrA Gene Sequencing Data.
[144] investigated methanogenic community during dry anaerobic digestion of food waste and observed a significant reduction in methanogen diversity after acclimation to dry AD.
Methanogen and sulfate-reducing abundance: Significant temporal variations in the abundance of the viable SRB and MA were recorded in the sediment.
They've also developed a vaccine injection that produces methanogen antibodies in saliva, which would then travel into the rumen.
Manure and crop residues probably stimulated the activity of methanogen that produce C[H.sub.4].
Microbial Reduction of Fe(III) in Smectite Minerals by Thermophilic Methanogen Methanothermobacter thermautotrophicus.