1. extremely large cities with populations typically exceeding 10 million people
Usage: plural of supercity

Examples

• Tokyo and New York are examples of supercities with massive populations.
• Urban planners study supercities to understand how to manage such large populations.
• The infrastructure challenges in supercities require innovative solutions.
• Many supercities struggle with traffic congestion and pollution.
• Economic opportunities in supercities attract millions of migrants each year.
• Housing costs in supercities are often extremely high.
• Transportation systems in supercities must handle enormous daily passenger volumes.