megalopolis is a large conurbation, where two or more large cities have sprawled outward to meet, forming something larger than a metropolis; a megacity while metropolis is (history) the mother (founding) polis (city state) of a colony, especially in the ancient greek/hellenistic world.Click to see full answer. Furthermore, what is the difference between metropolitan and megalopolis?What is the difference between a metropolitan area, a city, and a megalopolis? A metropolitan area includes a core city as well as nearby communities, making it a larger settlement of people than just a city. A megalopolis is any multicity area with more than 10 million people.Subsequently, question is, what is considered a metropolis? A large, densely populated urban area is called a metropolis. The noun metropolis comes from the Greek roots mētēr, meaning “mother,” and pólis, meaning “city.” Historically, the word referred to the founding city-state of a region in Ancient Greece. Today the word refers to any urban area. Correspondingly, which is bigger metropolis or megalopolis? Megalopolis and Metropolitan/metropolis are both used for reference big urban areas. These are basically areas with big city characterstics such as higher hierarchy of services,infrastructures and facilities. A megalopolis is any multicity area with more than 10 million people.What is a megalopolis city?meg·a·lop·o·lis. Use megalopolis in a sentence. noun. The definition of a megalopolis is a large and densely populated city or group of towns that make up an urban complex. New York City and surrounding areas including Long Island are an example of a megalopolis.