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.

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

From Barron's • Jun. 5, 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

According to the study, dependence on fossil fuels has temporarily hidden the effects of ecological overshoot by supporting food production, industrial growth, and energy supplies.

From Science Daily • May 27, 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

Shipping food thousands of miles and burning up fossil fuels went against his whole philosophy as a farmer.

From "The Omnivore's Dilemma" by Michael Pollan