/ Dictionary / Index P perigon: Meaning and Definition of Find definitions for: per•i•gon Pronunciation: (per'i-gon"), [key] — n. an angle of 360°. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perigon (Thesaurus) periglacial perigonium Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language