- a political division of the United Kingdom, in the NE part of the island of Ireland. 5238 sq. mi. (13,565 sq. km). Capital: Belfast.
- that part of the United Kingdom occupying the NE part of Ireland: separated from the rest of Ireland, which became independent in law in 1920; remained part of the United Kingdom, with a separate Parliament (Stormont), inaugurated in 1921, and limited self-government; scene of severe conflict between Catholics and Protestants, including terrorist bombing from 1969; direct administration from Westminster from 1972; assembly and powersharing executive established in 1998–99 following the Good Friday Agreement of 1998, suspended in 2002, and reinstated 2007. Capital: Belfast. Pop: 1 702 628 (2003 est). Area: 14 121 sq km (5452 sq miles)
Political division of the United Kingdom, located in northeastern Ireland. (See Ulster.)