epoch(redirected from Epoch (timekeeping))
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1. A particular period of history, especially one considered remarkable or noteworthy.
2. A unit of geologic time that is a division of a period.
3. Astronomy An instant in time that is arbitrarily selected as a point of reference for specification of celestial coordinates.
[Medieval Latin epocha, measure of time, from Greek epokhē, a point in time; see segh- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. a point in time beginning a new or distinctive period: the invention of nuclear weapons marked an epoch in the history of warfare.
2. a long period of time marked by some predominant or typical characteristic; era
3. (Astronomy) astronomy a precise date to which information, such as coordinates, relating to a celestial body is referred
4. (Palaeontology) geology a unit of geological time within a period during which a series of rocks is formed: the Pleistocene epoch.
5. (General Physics) physics the displacement of an oscillating or vibrating body at zero time
[C17: from New Latin epocha, from Greek epokhē cessation; related to ekhein to hold, have]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ep•och(ˈɛp ək; esp. Brit. ˈi pɒk)
1. a period of time marked by distinctive features, noteworthy events, changed conditions, etc.: an epoch of peace.
2. the beginning of a distinctive period in the history of anything.
3. a point of time distinguished by a particular event or state of affairs; a memorable date.
4. any of several divisions of a geologic period during which a geologic series is formed.
5. an arbitrarily fixed instant of time used as a reference in giving the elements of the orbit of a celestial body.
[1605–15; < New Latin epocha < Greek epochḗ pause, check, fixed point in time]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The shortest division of geologic time, being a subdivision of a period.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
epoch- Pronounced EH-puhk, it is from Greek epokhe, "fixed point in time, stoppage," and it was first the initial point in a chronology from which succeeding years were numbered.
See also related terms for stoppage.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
A time unit within a geological period.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||epoch - a period marked by distinctive character or reckoned from a fixed point or event|
period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"
day - an era of existence or influence; "in the day of the dinosaurs"; "in the days of the Roman Empire"; "in the days of sailing ships"; "he was a successful pianist in his day"
historic period, age - an era of history having some distinctive feature; "we live in a litigious age"
modern era - the present or recent times
|2.||epoch - (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded|
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
date - the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred; "he tried to memorizes all the dates for his history class"
|3.||epoch - a unit of geological time that is a subdivision of a period and is itself divided into ages|
geologic time, geological time - the time of the physical formation and development of the earth (especially prior to human history)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
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Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
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epoch[ˈiːpɒk] n (period) → epoca, era
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
epoch(ˈiːpok) , ((American) ˈepək) noun
(the start of) a particular period of history, development etc. The invention of printing marked an epoch in the history of education. epog عَصْر епоха época epocha, mezník die Epoche epoke εποχήépoca ajajärk آغاز دوران aikakausi époqueתקופה युग epoha, razdoblje kor(szak) jaman tímamót epoca 新時代 (획기적이고도 특색있는) 시대, 시기 epocha laikmets zaman tijdperktid, epokeepoka دوره، عصر، زمانه época epocă эпоха epocha, medzník doba epoha epok ช่วงเวลาสำคัญในอดีต çağ, devir 時代，新紀元 епоха, доба کسی عہد کی ابتدا kỷ nguyên 时代，新纪元
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.