Large urban areas formed when multiple cities and towns merge together and grow into one continuous metropolitan region.
From Latin 'con-' (together) plus 'urbs' (city), coined in the 1915 by Patrick Geddes in his urban sociology work. The plural form uses '-ations'.
The term 'conurbation' was invented to describe the mega-cities of the Industrial Age—London, Manchester, and Tokyo are classic examples where you can't tell where one city ends and another begins!
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