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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

The challenge is that methane and similar gases are extremely stable and do not react easily, which has limited their use as sustainable raw materials for manufacturing.

From Science Daily • Feb. 27, 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