fossil fuel

noun

: a fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains
fossil-fueled adjective

Examples of fossil fuel in a Sentence

oil and other fossil fuels
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Energy addition refers to a push to develop new technologies, such as renewables like solar and wind, in parallel with existing fossil fuels. Sam Meredith, CNBC, 5 June 2026 More than 90% of new renewable projects are now cheaper than fossil fuel alternatives, according to the International Renewable Energy Agency (IRENA). Matthew Glasser, ABC News, 4 June 2026 At the same time, fossil fuel generation dipped, although only by less than 1%. Mary Cunningham, CBS News, 4 June 2026 Whenever the strait reopens, the equipment that depended on oil largely won’t have changed and will need to be fueled again – with fossil fuels. David Goldman, CNN Money, 3 June 2026 See All Example Sentences for fossil fuel

Word History

First Known Use

1759, in the meaning defined above

Time Traveler
The first known use of fossil fuel was in 1759

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Cite this Entry

“Fossil fuel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fossil%20fuel. Accessed 7 Jun. 2026.

Kids Definition

fossil fuel

noun
: a fuel (as coal, oil, or natural gas) that is formed in the earth from plant or animal remains

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