Tetrazzini Syllabification: (Tet·raz·zi·ni)Pronunciation: /ˌtetrəˈzēnē/Definition of Tetrazzini adjective [postpositive] served over pasta with mushrooms and almonds in a cream sauce, sprinkled with cheese, and baked in the oven:turkey TetrazziniOrigin: early 20th century: named after Luisa Tetrazzini (1871–1940), Italian operatic soprano