gingivitis

n. inflammation of the gums

Gingivitis ("inflammation of the gums") (gingiva) around the teeth is a general term for gingival diseases affecting the gingiva (gums). As generally used, the term gingivitis refers to gingival inflammation induced by bacterial biofilms (also called plaque) adherent to tooth surfaces.
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Gingivitis /gin·gi·vi·tis/ inflammation of the gingiva. acute necrotizing ulcerative gingivitis , acute ulcerative gingivitis, acute [more]Gingivitis - Community and Resources

Noun
1. inflammation of the gums
(hypernym) periodontal disease, periodontitis

n. gingivitis, inflammation of the gums