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Noun: Gregorian calendar  gri'go-ree-un 'ka-lun-du(r)
  1. The solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752
    - New Style calendar

Type of: solar calendar

Encyclopedia: Gregorian calendar