'Methane' definitions:

Definition of 'methane'

From: WordNet
noun
A colorless odorless gas used as a fuel

Definition of 'Methane'

From: GCIDE
  • Methane \Meth"ane\, n. [See Methal.] (Chem.) A light, colorless, gaseous, inflammable hydrocarbon, CH4; marsh gas. It is the simplest of the aliphatic hydrocarbons. See Marsh gas, under Gas. [1913 Webster]
  • Methane series (Chem.), a series of saturated hydrocarbons, of which methane is the first member and type, and (because of their general chemical inertness and indifference) called also the {paraffin (little affinity) series}. The lightest members are gases, as methane, ethane; intermediate members are liquids, as hexane, heptane, etc. (found in benzine, kerosene, etc.); while the highest members are white, waxy, or fatty solids, as paraffin proper. [1913 Webster]

Definition of 'methane'

From: GCIDE
  • methanogen \methanogen\ n. A type of archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage, and capable of producing methane; a source of natural gas. [WordNet 1.5]

Synonyms of 'methane'

From: Moby Thesaurus