megacity

[ meg-uh-sit-ee ]
/ ˈmɛg əˌsɪt i /
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noun, plural meg·a·cit·ies.

a city having a population of one million or more.

Origin of megacity

First recorded in 1965–70; mega- + city
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for megacity

British Dictionary definitions for megacity

megacity

/ (ˈmɛɡəˌsɪtɪ) /

noun plural -cities

a city with over 10 million inhabitants

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012