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Definition of: methane
(meth′ān) noun Chem.
A colorless, inflammable gas, CH4, the simplest of the saturated hydrocarbons, formed by decomposition of vegetable matter, or artificially by dry distillation of certain organic matter, or by chemical treatment of certain metal compounds, as aluminum carbide. It is an important component of illuminating gas: often called marsh gas. [<METH(YL) + -ANE2]
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