English

Definition of periodontitis noun from the Oxford Advanced Learner's Dictionary

 

periodontitis

 noun
noun
BrE BrE//ˌperiədɒnˈtaɪtɪs//
 
; NAmE NAmE//ˌperiədɑːnˈtaɪtɪs//
 
(British English also pyorrhoea) (North American English also pyorrhea) [uncountable] (medical)
 
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a condition in which the area around the teeth becomes sore and swollen, which may make the teeth fall out
See the Oxford Advanced American Dictionary entry: periodontitis