IPA: /ˌmɛɡəˈlɒpəlɪs/
KK: /ˌmɛɡəˈlɑpəlɪs/
A large area that includes several big cities and their nearby regions, which are close enough to be seen as one big urban area.
New York City is part of a megalopolis that includes several other major cities in the area.
Megalopolis → It is formed from "mega" (from Greek "megas", meaning large or great) and "polis" (from Greek "polis", meaning city). The word "megalopolis" refers to a very large city or a region that is made up of several large cities that are close together.
Think of 'mega' meaning large and 'polis' meaning city — a megalopolis is a large city or a group of large cities.
No commonly confused words.