methane
UK /ˈmiːθeɪn/ US /ˈmiːθeɪn/
noun 2
Definitions
noun
1
The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.
Cattle emit a large amount of methane.
Methane, an invisible, odorless gas that makes up more than 95% of natural gas fuel, can be as much as 80 times more potent as a global warmer per given unit than CO₂, which is more plentiful in the atmosphere. While there are less emissions than CO₂, methane lasts around 12 years, while CO₂ lingers for centuries.
2
Any of very many derivatives of methane.
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