mediastinitis

noun
me·​di·​as·​ti·​ni·​tis | \ ˌmēd-ē-ˌas-tə-ˈnīt-əs How to pronounce mediastinitis (audio) \
plural mediastinitides\ -​ˈnit-​ə-​ˌdēz How to pronounce mediastinitides (audio) \

Medical Definition of mediastinitis

: inflammation of the tissues of the mediastinum