/ Dictionary / Index H hexagon: Meaning and Definition of Find definitions for: hex•a•gon Pronunciation: (hek'su-gon", -gun), [key] — n. a polygon having six angles and six sides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hexagon (Thesaurus) hexafluoride hexagonal Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language