Noun dec has 2 senses
  1. December, Dec - the last (12th) month of the year
    --1 is a kind of Gregorian calendar month
    --1 is a part of Gregorian calendar, New Style calendar; winter, wintertime
    --1 has parts:
     New Year's Eve, December 31; Christmas, Christmas Day, Xmas, Dec 25; Christmas, Christmastide, Christmastime, Yule, Yuletide, Noel; mid-December
  2. declination, celestial latitude, DEC - (astronomy) the angular distance to a point on a celestial object measured north or south from the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere
    --2 is a kind of angular distance
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