megalopolis(redirected from megalopolises)
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A densely populated urban area that sprawls across two or more large, independent cities. The photo is a nighttime satellite image showing population concentrations in megalopolis areas in the United States.
Examples include the Bos-Wash megalopolis from Boston to Washington,D.C., with an estimated population in excess of 41 million people; Chi-Pitts from Chicago to Pittsburgh; and San- San from San Francisco to San Diego. The largest megalopolis in the world is the 1,200-mile Taiheiyo Belt in Japan.