/ Dictionary / Index P perikaryon: Meaning and Definition of Find definitions for: per•i•kar•y•on Pronunciation: (per"i-kar'ē-on", -un), [key] — pl. -kar•y•a See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perihelion peril Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language