/ Dictionary / Index S sodium cyanide: Meaning and Definition of Find definitions for: so'dium cy'anide Pronunciation: [key] — Chem. Chem. a white, crystalline, deliquescent, water-soluble, poisonous powder, NaCN, prepared by heating sodium amide with charcoal: used chiefly in casehardening alloys, in the leaching and flotation of ore, and in electroplating. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium citrate sodium cyclamate Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language