fuel oil

noun

: an oil that is used for fuel and that usually has a higher flash point than kerosene

Examples of fuel oil in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In 2019, the same network obtained an additional 145 million euro contract for hemodialysis kits, with payment mechanisms reportedly linked to crude oil or fuel oil—allowing transactions to bypass conventional banking systems. Antonio María Delgado, Miami Herald, 21 Jan. 2026 The cold 2025 winter meant more heating of buildings, which often comes from natural gas and fuel oil that are big greenhouse gas emitters, King said. Seth Borenstein, Los Angeles Times, 13 Jan. 2026 The group estimates families abandoning fuel oil or propane could save closer to $1,000 annually. Jessica Towhey, Boston Herald, 5 Dec. 2025 Officials cited vehicle emissions, industrial activity, and heavy fuel oil use as the primary sources of pollution. Amir Daftari, MSNBC Newsweek, 24 Nov. 2025 See All Example Sentences for fuel oil

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of fuel oil was in 1893

Cite this Entry

“Fuel oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fuel%20oil. Accessed 31 Jan. 2026.

Kids Definition

fuel oil

noun
: an oil that is used for fuel and that usually ignites at a higher temperature than kerosene

More from Merriam-Webster on fuel oil

Last Updated: - Updated example sentences
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