/ Dictionary / Index C countable: Meaning and Definition of Find definitions for: count•a•ble Pronunciation: (koun'tu-bul), [key] — adj. able to be counted. (of a set) having a finite number of elements. (of a set) having elements that form a one-to-one correspondence with the natural numbers; denumerable; enumerable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: countable (Thesaurus) count countably additive function Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language