HPO

H4P3O1

A form of hydrogen peroxide — A colourless liquid, H₂O₂, soluble in water, used as a mild antiseptic, bleaching agent (especially for bleaching hair), oxidizing agent and chemical reagent.

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Meanings

nounHPO (uncountable)
  1. abbreviationinitialismuncountableInitialism of hydrogen peroxide.
  2. abbreviationinitialismuncountablemachine learningInitialism of hyperparameter optimization.
proper noun
  1. abbreviationinitialismInitialism of Hamilton Philharmonic Orchestra.
  2. abbreviationinitialismInitialism of Humanist Party of Ontario.

Rhymes & wordplay

Anagrams

hopphopoh
Cite this entry
APA

HPO. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/HPO

MLA

“HPO.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/HPO. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “HPO,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/HPO.

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