Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Origin: methyl

methane

 noun
     
Related topics: Chemistry, Gas, Coal, Oil
me‧thane [uncountable]
TPGHC a gas that you cannot see or smell, which can be burned to give heat:
Methane is one of the principal gases contributing to the greenhouse effect.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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