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
Officials cited vehicle emissions, industrial activity, and heavy fuel oil use as the primary sources of pollution.
—
Amir Daftari, MSNBC Newsweek, 24 Nov. 2025
Since the 1960s, heavy fuel oil—a residual product from refining gasoline, diesel, and kerosene—has been the principal energy source for ocean-faring vessels.
—Aman Tripathi, Interesting Engineering, 29 Oct. 2025
Heavy fuel oil also produces black carbon, a kind of soot that can settle on the ice and accelerate melt by darkening the surface, meaning more of the sun’s energy is absorbed.
—Laura Paddison, CNN Money, 3 Oct. 2025
The average savings for an American home that makes the switch are nothing to scoff at, with even bigger savings when making the swap from fuel oil, propane, or traditional electric heating.
—Sara Kiley Watson, Popular Science, 2 Oct. 2025
See All Example Sentences for fuel oil
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Amir Daftari, MSNBC Newsweek, 24 Nov. 2025
Since the 1960s, heavy fuel oil—a residual product from refining gasoline, diesel, and kerosene—has been the principal energy source for ocean-faring vessels.
—Aman Tripathi, Interesting Engineering, 29 Oct. 2025
Heavy fuel oil also produces black carbon, a kind of soot that can settle on the ice and accelerate melt by darkening the surface, meaning more of the sun’s energy is absorbed.
—Laura Paddison, CNN Money, 3 Oct. 2025
The average savings for an American home that makes the switch are nothing to scoff at, with even bigger savings when making the swap from fuel oil, propane, or traditional electric heating.
—Sara Kiley Watson, Popular Science, 2 Oct. 2025
See All Example Sentences for fuel oil
Cite this Entry
“Fuel oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fuel%20oil. Accessed 4 Dec. 2025.
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