Wagnerian noun 3adjective 1forms 3 noun3 •An admirer of Richard Wagner. •A musician who plays Wagnerian music. •An opera singer who specializes in Wagnerian roles. adjective1 •Of, or characteristic of Richard Wagner, or his music; (by extension) of epic dimensions.Clearly, Hitler saw his historical function as a Wagnerian grand opera. Vast cosmic changes required an accompaniment of slaughter on a colossal scale. — 1949 formsWagnerians · more Wagnerian · most Wagnerian