Breadcrumb Home > 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: careening Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language