Middlesex(redirected from Middx)
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Middlesex,former county adjoining London, SE England. In 1965 the county was principally reorganized into the Greater London boroughs of Barnet, Brent, Ealing, Enfield, Haringey, Harrow, Hillingdon, Hounslow, and Richmond upon Thames.
Middlesex,borough (1990 pop. 13,055), Middlesex co., N central N.J.; inc. 1913. The borough has diversified manufacturing industries that include the production of adhesives, plastics, and chemicals.
a former county of SE England: became mostly part of N and W Greater London in 1965