/ Dictionary / Index T thiocyanic acid: Meaning and Definition of Find definitions for: thi'o•cy•an'ic ac'id Pronunciation: (thī'ō-sī-an'ik, thī"-), [key] — Chem. Chem. an unstable acid, HSCN, known chiefly in the form of its salts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thiocyanate Thiodan Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language