con·ur·ba·tion \ˌkänə(r)ˈbāshən\noun (-s) Etymology:com- + Latin urb-, urbs town + English -ation — more at urban : a great aggregation or continuous network of urban communities < the Paris conurbation covers the whole of the Department of the Seine and also parts of Seine-et-Oise and Seine-et-Marne — Brian Chapman >