supercity

/ˈsupərˌsɪti/
noun
  1. A very large city, especially one formed by the merging of several cities or metropolitan areas; a megacity.
    • The rise of the supercity brings both economic opportunities and environmental challenges.
    • Planners are designing a supercity that will connect several towns through high-speed rail.
    • Tokyo is often described as a supercity because of its enormous population and size.
Antonyms
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