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Adjective: 45
  1. Being five more than forty
    - forty-five, xlv
Adjective: .45 caliber
Usage: US (elsewhere: .45 calibre)
  1. Of or relating to the bore of a gun (or its ammunition) that measures forty-five hundredths of an inch in diameter
    - .45-caliber [US], .45 calibre [Brit, Cdn], .45-calibre [Brit, Cdn]

See also: cardinal

Encyclopedia: 45,X karyotype