/ Dictionary / Index P pedion: Meaning and Definition of Find definitions for: ped•i•on Pronunciation: (ped'ē-un, pē'dē-), [key] — pl. ped•i•a a crystal form having only a single face, without a symmetrical equivalent: unique to the triclinic system. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pediococcus pedipalp Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language