/ Dictionary / Index D distribution function: Meaning and Definition of Find definitions for: distribu'tion func"tion Pronunciation: [key] — Statistics. Statistics. (of any random variable) the function that assigns to each number the probability that the random variable takes a value less than or equal to the given number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. distribution curve distributive Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language