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
oil and other fossil fuels
First Known Use of fossil fuel
Learn More about fossil fuel
Britannica.com: Encyclopedia article about "fossil fuel"
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