Noun
cosmopolis (plural cosmopolises or cosmopoleis)
An important city, such as a capital city, inhabited by people from a diverse range of cultural backgrounds.
We’ve seen lawmakers from the prosperous urban areas on Puget Sound seek the biggest tax increase in Washington history, for reasons of dubious merit, without a whit of concern for the average Joe or Jill who runs a gas station in Cosmopolis. Source: Internet
Partington, John S. Building Cosmopolis: The Political Thought of H. G. Wells. Source: Internet