[ sahy-uh-nahyd, -nid ]
/ ˈsaɪ əˌnaɪd, -nɪd /


Also cy·a·nid [sahy-uh-nid] /ˈsaɪ ə nɪd/. Chemistry.
  1. a salt of hydrocyanic acid, as potassium cyanide, KCN.
  2. a nitrile, as methyl cyanide, C2H3N.

verb (used with object), cy·a·nid·ed, cy·a·nid·ing.

to treat with a cyanide, as an ore in order to extract gold.

Origin of cyanide

1820–30; cyan-3 + -ide


sub·cy·a·nid, nounsub·cy·a·nide, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for cyanide

British Dictionary definitions for cyanide


cyanid (ˈsaɪənɪd)

/ (ˈsaɪəˌnaɪd) /


any salt of hydrocyanic acid. Cyanides contain the ion CN and are extremely poisonous
another name (not in technical usage) for nitrile

Derived forms of cyanide

cyanidation, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for cyanide

[ sīə-nīd′ ]


Any of various salts or esters of hydrogen cyanide containing a CN group, especially the extremely poisonous compounds potassium cyanide and sodium cyanide.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for cyanide

[ sīə-nīd′ ]

Any of a large group of chemical compounds containing the radical CN, especially the very poisonous salts sodium cyanide and potassium cyanide. Cyanides are used to make plastics and to extract and treat metals.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.