polymania
/pɒliˈmænɪə/ (pol-ee-MAH-nee-uh)
Definitions
1. noun
A craze or enthusiasm for something, especially a fashionable or intellectual idea.
“The art historian’s polymania for 19th-century Impressionism led her to spend years collecting rare prints.”
2. noun
A state of being fascinated or obsessed with something.
“After reading the fantasy novel, he experienced a polymania for the magical world it described.”