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Definition of gingivitis noun from the Oxford Advanced American Dictionary

 

gingivitis

 noun
noun
NAmE//ˌdʒɪndʒəˈvaɪt̮əs//
 
[uncountable] (medical)
 
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a condition in which the gums around the teeth become painful, red, and swollen
See the Oxford Advanced Learner's Dictionary entry: gingivitis