HFO

H4F4O1

Initialism of heavy fuel oil.

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Meanings

nounHFO (countable and uncountable, plural HFOs)

plural HFOs

  1. abbreviationcountableinitialismuncountableInitialism of heavy fuel oil.
  2. abbreviationcountableinitialismuncountableInitialism of hydrofluoroolefin.
  3. abbreviationcountableinitialismuncountableInitialism of high-frequency oscillation.
  4. abbreviationcountableinitialismuncountableInitialism of hands-free orgasm.

Synonyms & antonyms

Also see
hydrofluoroolefin

Rhymes & wordplay

Anagrams

hoffoh
Cite this entry
APA

HFO. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/HFO

MLA

“HFO.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/HFO. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “HFO,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/HFO.

Source: HFO on Wiktionary, CC BY-SA 4.0.