Definition of methane in English:

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Pronunciation: /ˈmiːθeɪn/
Pronunciation: /ˈmɛθeɪn/


[mass noun] Chemistry
A colourless, odourless flammable gas which is the main constituent of natural gas. It is the simplest member of the alkane series of hydrocarbons.
  • Chemical formula: CH4.
Example sentences
  • Other trace gases include methane, nitrous oxide, carbon monoxide, sulphur dioxide, and ozone.
  • Will it in the meantime be made from hydrocarbons like methane and natural gas?
  • For example, the alcohol derivative of methane is methanol and of ethane is ethanol.


Mid 19th century: from methyl + -ane2.

Words that rhyme with methane


For editors and proofreaders

Line breaks: me|thane

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