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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.

Renewables have also played a role—both solar and wind lose less energy as heat than burning fossil fuels.

From The Wall Street Journal • May 4, 2026

At the same time, the need to move away from fossil fuels has intensified the search for cleaner energy alternatives.

From Science Daily • May 4, 2026

The European Commission has urged member states to avoid prematurely shutting existing nuclear facilities as part of efforts to reduce reliance on fossil fuels and strengthen energy independence.

From Barron's • May 4, 2026

These can vary widely depending on the method used to make it, but in general burning SAF adds less carbon to the atmosphere than burning fossil fuels.

From BBC • May 3, 2026

It was grown without the help of fossil fuels, pesticides, or chemical fertilizers.

From "The Omnivore's Dilemma" by Michael Pollan