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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.

Today, the dominant production method is steam reforming, which separates hydrogen from methane.

From Science Daily • Jun. 2, 2026

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

In addition to methane, the observations also hinted at the presence of ammonia and carbon dioxide.

From Science Daily • May 22, 2026

By treating methane waste with the same gravity as a fire or a blowout, the industry can eliminate a major liability, addressing the world’s immediate energy needs efficiently and responsibly.

From The Wall Street Journal • May 21, 2026

When Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly of carbon dioxide, nitrogen, methane, and sulfur.

From "A Short History of Nearly Everything" by Bill Bryson




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