GNU Collaborative International Dictionary of English

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Found 2 definitions

1.       
   Gregorian , a. [NL. Gregorianus, fr. Gregorius Gregory, Gr. : cf. F. grégorien.] 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.
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2.       
   Year , n. [OE. yer, yeer, ȝer, AS. geár; akin to OFries. ir, gr, D. jaar, OHG. jār, G. jahr, Icel. ār, Dan. aar, Sw. år, Goth. jr, Gr.  a season of the year, springtime, a part of the day, an hour,  a year, Zend yāre year. √4, 279. Cf. Hour, Yore.]
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   The time of the apparent revolution of the sun trough the ecliptic; the period occupied by the earth in making its revolution around the sun, called the astronomical year; also, a period more or less nearly agreeing with this, adopted by various nations as a measure of time, and called the civil year; as, the common lunar year of 354 days, still in use among the Mohammedans; the year of 360 days, etc. In common usage, the year consists of 365 days, and every fourth year (called bissextile, or leap year) of 366 days, a day being added to February on that year, on account of the excess above 365 days (see Bissextile).
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   Of twenty year of age he was, I guess.
   Chaucer.
   
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   ☞ The civil, or legal, year, in England, formerly commenced on the 25th of March. This practice continued throughout the British dominions till the year 1752.
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   The time in which any planet completes a revolution about the sun; as, the year of Jupiter or of Saturn.
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   pl. Age, or old age; as, a man in years.
   Shak.
   
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   Anomalistic year, the time of the earth's revolution from perihelion to perihelion again, which is 365 days, 6 hours, 13 minutes, and 48 seconds. -- A year's mind (Eccl.), a commemoration of a deceased person, as by a Mass, a year after his death. Cf. A month's mind, under Month. -- Bissextile year. See Bissextile. -- Canicular year. See under Canicular. -- Civil year, the year adopted by any nation for the computation of time. -- Common lunar year, the period of 12 lunar months, or 354 days. -- Common year, each year of 365 days, as distinguished from leap year. -- Embolismic year, or Intercalary lunar year, the period of 13 lunar months, or 384 days. -- Fiscal year (Com.), the year by which accounts are reckoned, or the year between one annual time of settlement, or balancing of accounts, and another. -- Great year. See Platonic year, under Platonic. -- Gregorian year, Julian year. See under Gregorian, and Julian. -- Leap year. See Leap year, in the Vocabulary. -- Lunar astronomical year, the period of 12 lunar synodical months, or 354 days, 8 hours, 48 minutes, 36 seconds. -- Lunisolar year. See under Lunisolar. -- Periodical year. See Anomalistic year, above. -- Platonic year, Sabbatical year. See under Platonic, and Sabbatical. -- Sidereal year, the time in which the sun, departing from any fixed star, returns to the same. This is 365 days, 6 hours, 9 minutes, and 9.3 seconds. -- Tropical year. See under Tropical. -- Year and a day (O. Eng. Law), a time to be allowed for an act or an event, in order that an entire year might be secured beyond all question. Abbott. -- Year of grace, any year of the Christian era; Anno Domini; A. D. or a. d.
   1913 Webster