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epoch
ep·och / ˈepək/ • n. a period of time in history or a person's life, typically one marked by notable events or particular characteristics: the Victorian epoch. ∎ the beginning of a distinctive period in the history of someone or something: Jewish reimmigration to Palestine marked an epoch in the history of Jewry. ∎ Geol. a division of time that is a subdivision of a period and is itself subdivided into ages: the Pliocene epoch. |
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"epoch." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "epoch." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-epoch.html "epoch." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-epoch.html |
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epoch
epoch The date and time at which an astronomical observation was made, or the date for which positions of celestial objects and orbital elements are calculated. Because of precession and nutation, celestial coordinates change with time, so that positions of celestial objects must be referred to a given date. The standard epoch now commonly used in ephemerides and star catalogues is 2000January1, 12 h (written as 2000.0).
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"epoch." A Dictionary of Astronomy. 1997. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "epoch." A Dictionary of Astronomy. 1997. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O80-epoch.html "epoch." A Dictionary of Astronomy. 1997. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-epoch.html |
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epoch
epoch One of the intervals of geologic time recommended by the International Subcommission on Stratigraphic Terminology. An epoch is ranked as a third-order time unit, and is the equivalent of the chrono-stratigraphic unit series. Several epochs form a period; several periods an era. Epochs are themselves subdivided into ages. When used formally, the initial letter is capitalized, e.g. Early Devonian Epoch.
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AILSA ALLABY and MICHAEL ALLABY. "epoch." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "epoch." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-epoch.html AILSA ALLABY and MICHAEL ALLABY. "epoch." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-epoch.html |
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epoch
epoch One of the intervals of geological time recommended by the International Subcommission on Stratigraphic Terminology. An epoch is ranked as a third-order time unit, and is the equivalent of the chronostratigraphic unit ‘series’. Several epochs form a period, several periods an era. When used formally, the initial letter is capitalized (e.g. Early Devonian Epoch).
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MICHAEL ALLABY. "epoch." A Dictionary of Ecology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "epoch." A Dictionary of Ecology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O14-epoch.html MICHAEL ALLABY. "epoch." A Dictionary of Ecology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-epoch.html |
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epoch
epoch One of the intervals of geological time recommended by the International Subcommission on Stratigraphic Terminology. An epoch is ranked as a third-order time unit, and is the equivalent of the chronostratigraphic unit ‘series’. Several epochs form a period; several periods an era. When used formally, the initial letter is capitalized, e.g. Early Devonian Epoch.
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MICHAEL ALLABY. "epoch." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "epoch." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-epoch.html MICHAEL ALLABY. "epoch." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-epoch.html |
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epoch
epoch unit of geologic time that is a subdivision of a period. The Pleistocene and Holocene epochs, for example, are divisions of the Quaternary period. Epoch is also used to describe a short length of geologic time during a special occurrence, such as the glacial epoch. See geology ; Geologic Timescale (table). |
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"epoch." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "epoch." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-epoch.html "epoch." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-epoch.html |
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epoch
epoch The time interval between successive elements of a discrete-time signal, or between the discrete-time samples of a continuous-time signal (see discrete and continuous systems). Usually, for a given signal, the epochs are of a fixed size.
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JOHN DAINTITH. "epoch." A Dictionary of Computing. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. JOHN DAINTITH. "epoch." A Dictionary of Computing. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O11-epoch.html JOHN DAINTITH. "epoch." A Dictionary of Computing. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O11-epoch.html |
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epoch
epoch XVII. — modL. epocha — Gr. epokhḗ stoppage, station, fixed point of time, f. epékhein stop, take up a position, f. EPI- + ékhein hold, intr. be in a certain state.
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T. F. HOAD. "epoch." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "epoch." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-epoch.html T. F. HOAD. "epoch." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-epoch.html |
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Epoche
Epoche (bracketing out): see PHENOMENOLOGY.
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JOHN BOWKER. "Epoche." The Concise Oxford Dictionary of World Religions. 1997. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. JOHN BOWKER. "Epoche." The Concise Oxford Dictionary of World Religions. 1997. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O101-Epoche.html JOHN BOWKER. "Epoche." The Concise Oxford Dictionary of World Religions. 1997. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O101-Epoche.html |
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epoch
epoch
•matchlock • padlock • armlock
•Belloc
•deadlock, headlock, wedlock
•hemlock • fetlock • airlock
•breeze block • gridlock • ziplock
•flintlock • Shylock
•forelock, oarlock, warlock
•roadblock • woodblock • sunblock
•gunlock • lovelock • firelock
•hammerlock • fetterlock • interlock
•Enoch • kapok • epoch • shamrock
•bedrock • pibroch • Sheetrock
•Ragnarök • bedsock • windsock
•shell shock • aftershock • fatstock
•Bartók
•deadstock, headstock
•penstock • tailstock • feedstock
•tick-tock • laughing stock • livestock
•nostoc, Rostock, Vladivostok, Vostok
•rootstock • Woodstock • bloodstock
•gunstock
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"epoch." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "epoch." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-epoch.html "epoch." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-epoch.html |
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