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Definitions

fossil fuel

[fos-uhl fyoo-uhl] / ˈfɒs əl ˈfyu əl /
NOUN
fuel derived from prehistoric organisms
Synonyms


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.

This creates a dilemma for countries rethinking their reliance on fossil fuel, following the second energy crisis in four years.

From The Wall Street Journal • May 19, 2026

According to the Sierra Club, more than 85% of renewable energy sources now cost less than fossil fuel sources.

From Salon • May 16, 2026

They are often created by burning fossil fuel products like the petrol or diesel that power vehicles.

From BBC • May 13, 2026

Officials at the Paris conference said that cutting leaks and flaring from the fossil fuel industry could increase the availability of energy while slashing planet-heating emissions.

From Barron's • May 4, 2026

Back then, the Naylor farm produced more than two calories of food energy for every calorie of fossil fuel energy invested.

From "The Omnivore's Dilemma" by Michael Pollan




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