Definition of megapolis in English:

megapolis

Pronunciation /mɛˈɡapəlɪs/ /mɛˈɡap(ə)lɪs/

noun

  • A chief or capital city; (more generally) a large city. Occasionally as a name applied to such a city.

Origin

Mid 17th century; earliest use found in Thomas Herbert. From post-classical Latin megapolis from ancient Greek μεγα- + πόλις.