/ Dictionary / Index T tacticity: Meaning and Definition of Find definitions for: tac•tic•i•ty Pronunciation: (tak-tis'i-tē), [key] — n. Chem. stereoregularity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tactician tactics Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language