gregorian calendar

4 definitions found

gregorian calendar - Collaborative International Dictionary of English v.0.48 :

  Gregorian \Gre*go"ri*an\, a. [NL. Gregorianus, fr. Gregorius
     Gregory, Gr. ?: cf. F. gr['e]gorien.]
     Pertaining to, or originated by, some person named Gregory,
     especially one of the popes of that name.
     [1913 Webster]
  
     Gregorian calendar, the calendar as reformed by Pope
        Gregory XIII. in 1582, including the method of adjusting
        the leap years so as to harmonize the civil year with the
        solar, and also the regulation of the time of Easter and
        the movable feasts by means of epochs. See Gregorian  year
         (below).
  
     Gregorian chant (Mus.), plain song, or canto fermo, a kind
        of unisonous music, according to the eight celebrated
        church modes, as arranged and prescribed by Pope Gregory
        I. (called "the Great") in the 6th century.
  
     Gregorian modes, the musical scales ordained by Pope
        Gregory the Great, and named after the ancient Greek
        scales, as Dorian, Lydian, etc.
  
     Gregorian telescope (Opt.), a form of reflecting telescope,
        named from Prof. James Gregory, of Edinburgh, who
        perfected it in 1663. A small concave mirror in the axis
        of this telescope, having its focus coincident with that
        of the large reflector, transmits the light received from
        the latter back through a hole in its center to the
        eyepiece placed behind it.
  
     Gregorian year, the year as now reckoned according to the
        Gregorian calendar. Thus, every year, of the current
        reckoning, which is divisible by 4, except those divisible
        by 100 and not by 400, has 366 days; all other years have
        365 days. See Bissextile, and Note under Style, n., 7.
        [1913 Webster]

  Calendar \Cal"en*dar\, n. [OE. kalender, calender, fr. L.
     kalendarium an interest or account book (cf. F. calendrier,
     OF. calendier) fr. L. calendue, kalendae, calends. See
     Calends.]
     1. An orderly arrangement of the division of time, adapted to
        the purposes of civil life, as years, months, weeks, and
        days; also, a register of the year with its divisions; an
        almanac.
        [1913 Webster]
  
     2. (Eccl.) A tabular statement of the dates of feasts,
        offices, saints' days, etc., esp. of those which are
        liable to change yearly according to the varying date of
        Easter.
        [1913 Webster]
  
     3. An orderly list or enumeration of persons, things, or
        events; a schedule; as, a calendar of state papers; a
        calendar of bills presented in a legislative assembly; a
        calendar of causes arranged for trial in court; a calendar
        of a college or an academy.
        [1913 Webster]
  
     Note: Shepherds of people had need know the calendars of
           tempests of state. --Bacon.
           [1913 Webster]
  
     Calendar clock, one that shows the days of the week and
        month.
  
     Calendar month. See under Month.
  
     French Republican calendar. See under Vend['e]miaire.
  
     Gregorian calendar, Julian calendar, Perpetual calendar
     . See under Gregorian, Julian, and Perpetual.
        [1913 Webster]

gregorian calendar - WordNet (r) 2.1 (2005) :

  Gregorian calendar
      n 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 [syn: Gregorian calendar
           , New Style calendar]

gregorian calendar - Free On-line Dictionary of Computing (26 May 2007) :

  Gregorian calendar
  
     <time> The system of dates used by most of the world.  The
     Gregorian calendar was proposed by the Calabrian doctor
     Aloysius Lilius and was decreed by, and named after, Pope
     Gregory XIII on 1582-02-24.  It corrected the Julian calendar
     whose years were slightly longer than the solar year.  It also
     replaced the lunar calendar which was also out of time with
     the seasons.  The correction was achieved by skipping several
     days as a one-off resynchronisation and then dropping three
     leap days every 400 hundred years.  In the revised system,
     leap years are all years divisible by 4 but excluding those
     divisible by 100 but including those divisible by 400.  This
     gives a mean calendar year of 365.2425 days = 52.1775 weeks =
     8,765.82 hours = 525,949.2 minutes = 31,556,952 seconds.
     leap seconds are occasionally added to this to correct for
     irregularities in the Earth's rotation.
  
     (2007-01-10)