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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.

Gas fields, LNG tankers, pipelines, and distribution lines also give rise to massive leaks of methane -- a gas with an even greater global warming potential than CO2.

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

When lake levels are high, microorganisms more effectively consume methane before it can reach the atmosphere.

From Science Daily • Feb. 24, 2026

“If the air stops circulating, methane will seep out of the coal and build up,” Dad said.

From "October Sky" by Homer Hickam