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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.

Tools such as CalEnviroScreen or PSE’s methane risk map can help people locate pollution sources, toxic facilities and other threats in their area.

From Los Angeles Times • May 27, 2026

The Saturn sized world, known as TOI-199b, contains methane in its atmosphere, according to a new study.

From Science Daily • May 22, 2026

"Models for the composition of temperate, gas-giant exoplanets had predicted that they would contain methane, so it is good to get confirmation that our theories are accurate."

From Science Daily • May 22, 2026

According to the IEA, around 70% of fossil-fuel methane emissions could be reduced with current technologies—more than half of it at zero net cost.

From The Wall Street Journal • May 21, 2026

The only gas known unambiguously to be present was methane, CH4, discovered by G. P. Kuiper.

From "Cosmos" by Carl Sagan




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