Simple Definition of fossil fuel
: a fuel (such as coal, oil, or natural gas) that is formed in the earth from dead plants or animals
Full Definition of fossil fuel
: a fuel (as coal, oil, or natural gas) formed in the earth from plant or animal remains
Examples of fossil fuel in a sentence
oil and other fossil fuels
First Known Use of fossil fuel
Learn More about fossil fuel
Britannica.com: Encyclopedia article about "fossil fuel"
Seen and Heard
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