fossil fuels
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All fossil fuels produce carbon dioxide when burned. (See greenhouse effect.)
Burning fossil fuels is a main cause of air pollution.
All of these fuels were formed from the remains of plants and animals that lived millions of years ago.
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.
Renewables have played a role, as energy sources such as solar and wind lose less energy to heat than burning fossil fuels.
From The Wall Street Journal • Jun. 17, 2026
Steyer, 68, made his fortune founding a hedge fund that included investments in fossil fuels, private prisons and other businesses that are controversial among Democrats.
From Los Angeles Times • Jun. 10, 2026
The energy major’s restructure creates two units: one for fossil fuels, and another for customers and markets.
From The Wall Street Journal • Jun. 9, 2026
Turkey said raising the global share of energy demand met by electricity from roughly 20 percent to 35 percent by 2035 would speed up the shift from fossil fuels to renewable power.
From Barron's • Jun. 9, 2026
It was grown without the help of fossil fuels, pesticides, or chemical fertilizers.
From "The Omnivore's Dilemma" by Michael Pollan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
