Topic: GAS, COAL, OIL
| Date: | 1800-1900 |
| Origin: | methyl |
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meā§thane
[uncountable]
[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.
Methane is one of the principal gases contributing to the greenhouse effect.