trichinosisPronunciation: /ˌtrɪkɪˈnəʊsɪs/Definition of trichinosis noun [mass noun] a disease caused by trichinae, typically from infected meat, characterized by digestive disturbance, fever, and muscular rigidity. This disease is typically caused by Trichinella spiralis trichinosis in other Oxford dictionaries Definition of trichinosis in the US English dictionary