/ Dictionary / Index E enneahedron: Meaning and Definition of Find definitions for: en•ne•a•he•dron Pronunciation: (en"ē-u-hē'drun), [key] — pl. -dra a solid figure having nine faces. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. enneagon enneastyle Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language