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fuel oil

American

noun

an oil used for fuel, especially one used as a substitute for coal, as crude petroleum.

fuel oil British

noun

a liquid petroleum product having a flash point above 37.8°C: used as a substitute for coal in industrial furnaces, domestic heaters, ships, and locomotives

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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fuel oil

About half of Maine households rely on fuel oil to heat their homes, and filling a standard 275-gallon tank costs about $750 more than it did a year ago.

From MarketWatch ● Oct. 28, 2026

In April, exports rose 2.6 percent to $327.1 billion, fueled by crude oil, fuel oil and other petroleum products.

From Barron's ● Jun. 9, 2026

Find insight on Badger Infrastructure Solutions, airline fuel, oil futures and more in the latest Market Talks covering Energy and Utilities.

From The Wall Street Journal ● Jun. 8, 2026

Cuba has completely run out of diesel and fuel oil, the country's energy minister Vicente de la O Levy has said.

From BBC ● May 14, 2026

We spent weeks at the huge Shell Haven Refinery with a special instructor who taught us all about fuel oil and diesel oil and gas oil and lubricating oil and kerosene and gasoline.

From "Boy: Tales of a Childhood" by Roald Dahl

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023