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Definition of Periodontium
1. Noun. The specialized tissues that both surround and support the teeth, maintaining them in the maxillary and mandibular bones; the tissues including alveolar bone, cementum, gums and periodontal ligament. ¹
¹ Source: wiktionary.com
Medical Definition of Periodontium
1. Synonym: periodontal ligament. Origin: L. Fr. Peri-+ G. Odous, tooth (05 Mar 2000)