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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 primary component of natural gas is methane, which, when burned, releases CO2 -- the leading greenhouse gas responsible for global warming.

From Barron's • Mar. 27, 2026

However the increase in concentrations of heat-trapping greenhouse gases -- carbon dioxide, methane and nitrous oxide -- "to their highest level in at least 800,000 years" has "upset this equilibrium", the WMO said.

From Barron's • Mar. 23, 2026

Ultrasour gas is used to produce petrochemical feedstock and methane for heating and cooking.

From The Wall Street Journal • Mar. 20, 2026

If farmers can figure out, for example, that a certain breed of cattle releases more methane when it consumes a particular kind of feed, they could change the feed to cut down on the methane.

From The Wall Street Journal • Mar. 17, 2026

We mix together and spark the gases of the primitive Earth: hydrogen, water, ammonia, methane, hydrogen sulfide—all present, incidentally, on the planet Jupiter today and throughout the Cosmos.

From "Cosmos" by Carl Sagan