#April__Apr  the month following March and preceding May
  supertype:  Gregorian_calendar_month  a month in the Gregorian calendar
  part:  April_Fools'_day  Pan_American_Day  Patriot's_Day  mid-April
  part of:  Gregorian_calendar__New_Style  the solar calendar now in general use, introduced by Pope Gregory XIII in 1582 AD 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
  part of:  springtime__spring  the season of growth; "the emerging buds were a sure sign of spring"; "he will hold office until the spring of next year"

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