fuel oil

noun

Any of various grades of oil used principally as fuel.

“Near-synonyms: bunker oil, bunker fuel, bunker (ellipsis)”

Similar
bunker oilbunker fuelbunkerheating oil
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Meanings

nounfuel oil (usually uncountable, plural fuel oils)

plural fuel oils

  1. uncountableusuallyAny of various grades of oil used principally as fuel.
    1. uncountableusuallyThe heaviest commercial fuel that can be obtained from crude oil.

      Near-synonyms: bunker oil, bunker fuel, bunker (ellipsis)

      Synonyms: bunker oil, bunker fuel, bunker

Synonyms & antonyms

nounThe heaviest commercial fuel that can be obtained from crude oil.

Similar
bunker oilbunker fuelbunker

More synonyms by meaning

nouna petroleum product used for fuel

Similar
heating oil
Broader
oilfuel
Also see
heating oil

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

fuel oil. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/fuel%20oil

MLA

“fuel oil.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fuel%20oil. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “fuel oil,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/fuel%20oil.

Source: fuel oil on Wiktionary, CC BY-SA 4.0.