Sidereal year
Year Year, n. [OE. yer, yeer, [yogh]er, AS. ge['a]r; akin to OFries. i?r, g?r, D. jaar, OHG. j[=a]r, G. jahr, Icel. [=a]r, Dan. aar, Sw. [*a]r, Goth. j?r, Gr. ? a season of the year, springtime, a part of the day, an hour, ? a year, Zend y[=a]re year. [root]4, 279. Cf. {Hour}, {Yore}.] [1913 Webster] 1. 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}). [1913 Webster]

Of twenty year of age he was, I guess. --Chaucer. [1913 Webster]

Note: 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. [1913 Webster]

2. The time in which any planet completes a revolution about the sun; as, the year of Jupiter or of Saturn. [1913 Webster]

3. pl. Age, or old age; as, a man in years. --Shak. [1913 Webster]

{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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • sidereal year — n. see YEAR (sense 3) …   English World dictionary

  • Sidereal year — The sidereal year is the time taken for the Sun to return to the same position with respect to the stars of the celestial sphere. It is the orbital period of Earth, equal to 365.25636042 mean solar days (31,558,149.540 seconds), that is… …   Wikipedia

  • sidereal year — The period of one complete revolution of the earth around the sun with respect to a fixed point, 365 days 6 h 9 min and 9.5534 s in the year 1900, and increasing at a rate of 0.0001 s annually. Because of the precession of the equinoxes, this is… …   Aviation dictionary

  • sidereal year — noun The orbital period of the Earth; a measure of the time it takes for the Sun to return to the same position with respect to the stars of the celestial sphere. A sidereal year is about 20.4 minutes longer than the tropical year due to… …   Wiktionary

  • sidereal year — sideriniai metai statusas T sritis fizika atitikmenys: angl. sidereal year vok. siderisches Jahr, n; Sternjahr, n rus. звёздный год, m; сидерический год, m pranc. année sidérale, f …   Fizikos terminų žodynas

  • sidereal year — noun Astronomy the sidereal period of the earth about the sun, about twenty minutes longer than the solar year …   English new terms dictionary

  • sidereal year — noun the time for the earth to make one complete revolution around the sun, relative to the fixed stars • Hypernyms: ↑year, ↑sidereal time …   Useful english dictionary

  • sidereal year — side′real year′ n. astron. year 4), c) • Etymology: 1675–85 …   From formal English to slang

  • sidereal year — /saɪˌdɪəriəl ˈjɪə/ (say suy.dearreeuhl year) noun See year (def. 6) …   Australian English dictionary

  • sidereal year — Astron. year (def. 4c). [1675 85] * * * …   Universalium

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