Definitions

1. noun

a large city or metropolitan area, especially one that is considered cosmopolitan; a city that is considered to be a center of culture and learning.

“The cosmopolis is known for its vibrant nightlife and diverse population.”

2. noun

a city that is the center of a civilization or empire, especially a city that is considered to be the seat of power and culture.

“The ancient city was the cosmopolis of the ancient civilization.”