fossil fuels

NOUN

fuel derived from prehistoric organisms

Synonyms

WEAK

hydrocarbon deposit nonrenewable energy nonrenewable fuel source

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.

Turkey said raising the global share of energy demand met by electricity from roughly 20 percent to 35 percent by 2035 would speed up the shift from fossil fuels to renewable power.

From Barron's • Jun. 9, 2026

Chief Executive Meg O’Neill oversees a shift back to fossil fuels after a failed renewables foray and Chairman Albert Manifold’s firing.

From The Wall Street Journal • Jun. 9, 2026

The Iran war also created demand for alternatives to fossil fuels.

From Barron's • Jun. 5, 2026

When used as a fuel, it produces only water and heat rather than carbon dioxide and other pollutants associated with fossil fuels.

From Science Daily • Jun. 2, 2026

The nitrogen for the fields would no longer be made with the sun’s energy but with fossil fuels.

From "The Omnivore's Dilemma" by Michael Pollan