/ Dictionary / Index H -hedral: Meaning and Definition of Find definitions for: -hedral Pronunciation: [key] a combining form used to form adjectives corresponding to nouns ending inpolyhedral. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hedonist -hedron Related Content Daily Word Quiz: voracious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language