noun Fë·dor I·va·no·vich [fyaw-duh r ee-vah-nuh-vyich] /ˈfyɔ dər iˈvɑ nə vyɪtʃ/, 1873–1938, Russian operatic bass. nounFyodor Ivanovich (ˈfjɔdər iˈvanəvitʃ). 1873–1938, Russian operatic bass singer