1. a very large city with a population of over 10 million people

Examples

• Tokyo is considered the world’s largest megacity with over 37 million residents.
• Urban planners face unique challenges when designing infrastructure for a megacity.
• The rapid growth of megacities in developing countries has created new environmental concerns.
• Traffic congestion is a common problem in every megacity around the globe.
• By 2030, experts predict there will be 43 megacities worldwide.
• Living costs in a megacity are typically much higher than in smaller urban areas.