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.
Scientists estimate how much methane enters the atmosphere from sources such as wetlands, agriculture, fossil fuels and geological activity, then compare that with the amount removed through atmospheric chemistry and other processes.
From Science Daily ● Sep. 15, 2026
The original theme backing the rise was electrification, driven by a shift away from fossil fuels.
From MarketWatch ● Sep. 10, 2026
But moving to more renewable energy is a critical part of the journey to net zero and the transition from fossil fuels.
From BBC ● Sep. 4, 2026
Even if residents don’t mind the fossil fuels, they do care about water consumption and air quality.
From The Wall Street Journal ● Sep. 4, 2026
Unlike fossil fuels, wind, solar, and hydroelectric systems generate electricity with no associated air pollution emissions.
From "1919 The Year That Changed America" by Martin W. Sandler
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.
