/ Dictionary / Index A abstract number: Meaning and Definition of Find definitions for: ab'stract num'ber Pronunciation: [key] — Math. Math. a number that does not designate the quantity of any particular kind of thing. Cf. denominate number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. abstract noun abstract of title Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language