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Definitions

methane

[meth-eyn, mee-theyn] / ˈmɛθ eɪn, ˈmi θeɪn /
NOUN
marsh gas
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The observations revealed an atmosphere containing water vapor, methane, carbon dioxide, ammonia and other molecules.

From Science Daily • Jun. 28, 2026

“As organic waste decomposes in landfills, it accounts for 41% of the state’s methane emissions, a greenhouse gas with 84 times the power to heat the climate as carbon dioxide,” according to CalRecycle.

From Los Angeles Times • Jun. 26, 2026

European rules on deforestation, methane emissions and digital regulations are among the U.S.’s top concerns, U.S.

From The Wall Street Journal • Jun. 25, 2026

A spokesperson for his company, Hilcorp, said its operations complied with state and federal rules, adding that Hilcorp was “proud” of recent efforts to reduce its methane emissions.

From Salon • Jun. 24, 2026

Then of course the black phone rang, and Dad heard there was a fall, men were hurt, maybe trapped, methane was surely seeping in.

From "October Sky" by Homer Hickam




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