Phrase guide

hypochlorous acid

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A weak, unstable acid, HOCl, known only in solution; it is made by the action of chlorine on water and, along with its salts, the hypochlorites, occurs naturally in biology and has various practical uses in disinfection.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a weak unstable acid known only in solution and in its salts; used as a bleaching agent and as an oxidizing agent

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: acid

History

Etymology

From hypo- + chlorous acid.

Across languages

Translations

6 source translations are retained for this English entry.

  • Chinese Cantonese: 次氯酸 (ci3 luk6 syun1) — a weak acid; HOCl
  • Chinese Mandarin: 次氯酸 (cìlǜsuān) — a weak acid; HOCl
  • Greek: υποχλωριώδες οξύ (ypochloriódes oxý) — a weak acid; HOCl
  • Hungarian: hipoklórossav — a weak acid; HOCl
  • Romanian: acid hipocloros — a weak acid; HOCl
  • Swedish: underklorsyrlighet — a weak acid; HOCl