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Learner's Dictionary
fossil fuel
1 ENTRIES FOUND:
fossil fuel
(noun)
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fossil fuel
noun
plural
fossil fuels
fossil fuel
noun
plural
fossil fuels
Learner's definition of FOSSIL FUEL
:
a fuel (such as coal, oil, or natural gas) that is formed in the earth from dead plants or animals
[
count
]
oil and other
fossil fuels
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[
noncount
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sources of
fossil fuel
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only allowing in people with a lot of money or from a high social class
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