Source : WordNet®

New Style calendar
     n : 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 [syn: {Gregorian calendar}]