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.

Despite these advantages, around 95% of hydrogen production today still depends on fossil fuels.

From Science Daily • Jun. 2, 2026

Its Prime Minister Feleti Teo has made clear that he believes "opening, subsidising and exporting fossil fuels is immoral and unacceptable".

From Barron's • May 28, 2026

Exxon prides itself on its ability to find and extract fossil fuels hidden deep in the earth’s crevices.

From The Wall Street Journal • May 28, 2026

As well as pricing issues, some commentators believe China wants to avoid over-dependence on Russian fossil fuels.

From BBC • May 20, 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