gingivostomatitis

noun
gin·​gi·​vo·​sto·​ma·​ti·​tis | \ ˌjin-jə-vō-ˌstō-mə-ˈtīt-əs How to pronounce gingivostomatitis (audio) \
plural gingivostomatitides\ -​ˈtit-​ə-​ˌdēz How to pronounce gingivostomatitides (audio) \ or gingivostomatitises

Medical Definition of gingivostomatitis

: inflammation of the gums and of the mouth