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.

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

Early statistics show the war has spurred explosive demand for electric vehicles and other energy sources that don’t use fossil fuels.

From Barron's • May 28, 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

Today, most hydrogen is produced through industrial methods that rely on fossil fuels such as petroleum, natural gas, and coal.

From Science Daily • May 20, 2026

And like most factories, the industrial farm is powered with fossil fuels.

From "The Omnivore's Dilemma" by Michael Pollan