the GNU version of the Collaborative International Dictionary of English
adj. Surrounding the teeth.
The Century Dictionary and Cyclopedia
Surrounding a tooth: specifically noting the lining membrane of the socket of a tooth.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. of or relating to or involving or practicing periodontics
Word Usage
"But if it has bad breath, it is a likely sign of dental diseaseāincluding tartar buildup, gingivitis and a chronic infection called periodontal disease, veterinarians say."