Phrase guide

hydrocyanic 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

a solution of hydrogen cyanide, HCN, in water; a weak poisonous acid, used as a fumigant

Definition source: English Wiktionary via Wiktextract

Usage: countable, 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 solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: prussic acid

Antonyms: none provided

Broader terms: acid

History

Etymology

No etymology was provided for this word.

Across languages

Translations

22 source translations are retained for this English entry.

  • Catalan: àcid cianhídric — prussic acid
  • Czech: kyselina kyanovodíková — prussic acid
  • French: acide prussique — prussic acid
  • French: acide cyanhydrique — prussic acid
  • German: Blausäure — prussic acid
  • Greek: υδροκυανικό οξύ (ydrokyanikó oxý) — prussic acid
  • Greek: πρωσσικό οξύ (prossikó oxý) — prussic acid
  • Hungarian: hidrociánsav — prussic acid
  • Hungarian: kéksav — prussic acid
  • Icelandic: blásýra — prussic acid
  • Irish: aigéad prúiseach — prussic acid
  • Italian: acido cianidrico — prussic acid
  • Japanese: シアン化水素酸 (shian-ka suisosan) — prussic acid
  • Japanese: 青酸 (seisan) — prussic acid
  • Norwegian Bokmål: blåsyre — prussic acid
  • Norwegian Nynorsk: blåsyre — prussic acid
  • Polish: kwas pruski — prussic acid
  • Polish: kwas cyjanowodorowy — prussic acid
  • Portuguese: ácido cianídrico m ácido prússico — prussic acid
  • Romanian: acid cianhidric — prussic acid
  • Russian: сини́льная кислота́ (sinílʹnaja kislotá) — prussic acid
  • Thai: กรดไฮโดรไซยานิก (gròt-hai-droo-sai-yaa-nìk) — prussic acid