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.
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
He said countries big and small remained in some way dependent on fossil fuels -- including Australia, a major coal and gas exporter, yet highly reliant on imports for petrol, diesel and other fuels.
From Barron's • Jun. 8, 2026
Airlines so far have favored these “drop-in fuels,” because they are chemically identical to fossil fuels and work with traditional engines.
From The Wall Street Journal • Jun. 2, 2026
Despite these advantages, around 95% of hydrogen production today still depends on fossil fuels.
From Science Daily • Jun. 2, 2026
Originally I thought Joel sold locally just to keep from burning fossil fuels.
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.
