/ Dictionary / Index D dihedron: Meaning and Definition of Find definitions for: di•he•dron Pronunciation: (dī-hē'drun), [key] — n. Geom. a figure formed by two intersecting planes. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dihedral angle Dihua Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language