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Definitions of 180th
  1. adjective
    the ordinal number of one hundred eighty in counting order
Definition that contains 180th
  • dateline an imaginary line on the surface of the earth following (approximately) the 180th meridian
  • date line an imaginary line on the surface of the earth following (approximately) the 180th meridian
  • international date line an imaginary line on the surface of the earth following (approximately) the 180th meridian
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