/ Dictionary / Index C counterterrorism: Meaning and Definition of Find definitions for: coun•ter•ter•ror•ism Pronunciation: (koun"tur-ter'u-riz"um), [key] — n. terrorism in reaction to or retaliation for some previous act of terrorism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: counterterrorism (Thesaurus) countertenor countertop Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language