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Definitions

fossil fuels

NOUN
fuel derived from prehistoric organisms
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.

Last year's summit in Brazil ended with a modest pact that failed to explicitly mention fossil fuels and many nations fear a repeat unless stronger leadership is shown.

From Barron's • Jun. 8, 2026

Airlines so far have favored these “drop-in fuels,” because they are chemically identical to fossil fuels and work with traditional engines.

From The Wall Street Journal • Jun. 2, 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

These record-smashing heatwaves have come in a world about 1.4C warmer on average than during the late 19th Century, because of human activities such as the burning of fossil fuels.

From BBC • May 26, 2026

“You’re kidding, right? You don’t think the huge amounts of greenhouse gases we’re releasing into the air by burning fossil fuels has anything to do with the fact that the earth keeps getting hotter?”

From "Two Degrees" by Alan Gratz



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