History of Manchester
According to Oxford University Press, Manchester derived its name from Mamucium, the Roman name for the 1st century-settlement and fort. Mamucium itself is a Latinised form of the Celtic meaning "breast-shaped hill".
Manchester
The name Manchester, though officially applied only to the metropolitan district within Greater Manchester, has been applied to other, wider divisions of land, particularly across much of the Greater Manchester county and urban area. The "Manchester City Zone", "Manchester post town" and the "Manchester Congestion Charge" are all examples of this.