/ Dictionary / Index P perisarc: Meaning and Definition of Find definitions for: per•i•sarc Pronunciation: (per'u-särk"), [key] — n. Zool. the horny or chitinous outer case or covering protecting the soft parts of hydrozoans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perique periscope Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language