/ Dictionary / Index P periapical: Meaning and Definition of Find definitions for: per•i•a•pi•cal Pronunciation: (per"ē-ā'pi-kul, -ap'i-), [key] — adj. encompassing or surrounding the tip of the root of a tooth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perianth periapt 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