Northern Mariana Islands
geographical name
Northern Mar·i·ana Islands
| \ ˌmer-ē-ˈa-nə
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Definition of Northern Mariana Islands
islands of the western Pacific Ocean that were part of the Trust Territory of the Pacific Islands 1947–76 and that have constituted a U.S. commonwealth since 1986; area 184 square miles (478 square kilometers), population 53,883