metho-, meth- +

(a combining form meaning methyl)

methane (s) (noun)
A colorless, odorless, highly flammable gas, the simplest of the alkanes, which is produced by decaying organic matter and in the guts of ruminants, occurs in natural gas and coal gas, and is used as a fuel.
methanogen (s), methanogen (pl) (noun forms)
A methanogenic organism; specifically, any of the group of methane-producing archaebacteria that are found in anaerobic environments and in the guts of animals; especially, ruminants and arthropods.
methanogenesis (s) (noun)
The production of methane by living organisms; specifically by methanogenic archaebacteria.
methanogenic (adjective)
Producing methane; specifically, designating archaebacteria that produce methane. Also: of, relating to, or involving methanogenesis.
methanol (s) (noun)
The simplest of the aliphatic alcohols, a colorless, volatile, flammable, toxic liquid that was originally obtained by the distillation of wood and is used in chemical synthesis, as a solvent, and as an alternative fuel. Also called methyl alcohol, or wood alcohol.
methanolic (adjective)
Of, dissolved in, or diluted with methanol.
methanolysis (s) (noun)
Alcoholysis using methanol; that is, a chemical reaction in which a compound reacts with an alcohol, causing decomposition and producing two or more new compounds.
methanometer (s) methanometers (pl) (noun forms)
An instrument for measuring the concentration of methane in air; especially, in coal mines.
methanophile (s), methanophiles (pl) (noun forms)
An organism capable of oxidizing methane or bacteria that are able to metabolize methane as their only source of carbon and energy.
methanotroph (s), methanotrophs (pl) (noun forms)
Any of a group of aerobic bacteria capable of utilizing methane as a carbon and energy source.
ventilation air methane (VAM)
Methane released to the atmosphere from the ventilation systems of underground coal mines; because methane is a greenhouse gas, technologies have been developed to degasify the ventilation air by means of oxidation.