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.

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

"But by scaling it up, we can shift the source of aviation fuel from geopolitically sensitive fossil fuels to locally managed renewable grids and waste streams."

From BBC • May 3, 2026

Asked about divesting from fossil fuels, Caballero said the transition away from fossil fuel companies will take time.

From Los Angeles Times • May 1, 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