/ Dictionary / Index R random number: Meaning and Definition of Find definitions for: ran'dom num'ber Pronunciation: [key] — Statistics. Statistics. a number chosen by a random sampling, as from a tableor generated by a computer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. random line random sampling Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language