periodontium: Meaning and Definition of

per•i•o•don•tium

Pronunciation: (per"ē-u-don'shum, -shē-um), [key]
— pl. -tia
  1. the bone, connective tissue, and gum surrounding and supporting a tooth.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.