a metropolitan county of NW England, administered since 1986 by the unitary authorities of Wigan, Bolton, Bury, Rochdale, Salford, Manchester, Oldham, Trafford, Stockport, and Tameside. Area: 1286 sq km (496 sq miles)
Greater Manchester in American English
county in NW England, surrounding Manchester: 496 sq mi (1,285 sq km); pop. 2,499,000