mediastinitis
/ˌmiːdɪəstɪˈnʌɪtɪs/ /ˌmiːdɪəstʌɪˈnʌɪtɪs/Medicine
noun
Inflammation or infection of the mediastinum; an instance of this.
Origin
Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From mediastinum + -itis.