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methane

noun
🔊/ˈmiːθeɪn/
🔊/ˈmeθeɪn/
[uncountable]
(symbol CH4)
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  1. a gas without colour or smell, that burns easily and is used as fuel. Natural gas consists mainly of methane甲烷；沼气.
    Oxford Collocations DictionaryMethane is used before these nouns:
    • emission
    • gas
    See full entry
    Word Originmid 19th cent.: from methyl + -ane.