/ Dictionary / Index H histogram: Meaning and Definition of Find definitions for: his•to•gram Pronunciation: (his'tu-gram"), [key] — n. Statistics. a graph of a frequency distribution in which rectangles with bases on the horizontal axis are given widths equal to the class intervals and heights equal to the corresponding frequencies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: histogram (Thesaurus) histogenesis histography 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