Main Entry: meg·a·lop·o·lis

Pronunciation: \ˌme-gə-ˈlä-pə-ləs\

Function: noun

Date: circa 1828

1 : a very large city
2 : a thickly populated region centering in a metropolis or embracing several metropolises

— meg·a·lo·pol·i·tan \-lō-ˈpä-lə-tən\ noun or adjective