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supercity

American  
[soo-per-sit-ee] / ˈsu pərˌsɪt i /

noun

plural

supercities

  1. a large, heavily populated urban area that includes several cities; megalopolis.

  2. a very large city.

Etymology

Origin of supercity

An Americanism dating back to 1920–25; super- + city

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.