HCN

H4C3N1

A form of hydrogen cyanide — A colourless, very poisonous, volatile liquid, HCN, used in the production of dyes, plastics and fumigants; it dissolves in water to form hydrocyanic acid and reacts with bases to form cyanides, and with some organic compounds to form nitriles.

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Meanings

nounHCN (plural HCNs)

plural HCNs

  1. abbreviationinitialismchemistryInitialism of hydrogen cyanide.
  2. abbreviationinitialismnumbersInitialism of highly composite number.

Synonyms & antonyms

Also see
highly composite number
Cite this entry
APA

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

MLA

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

Chicago

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

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