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Definition of Epoch in English :

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Epoch meaning in English

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Epoch

see synonyms of epoch

Noun

1. epoch, era

a period marked by distinctive character or reckoned from a fixed point or event

2. date of reference, epoch

(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded

3. epoch

a unit of geological time that is a subdivision of a period and is itself divided into ages

WordNet Lexical Database for English. Princeton University. 2010.

Epoch

see synonyms of epoch
noun
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
a precise date to which information, such as coordinates, relating to a celestial body is referred
4. geology
a unit of geological time within a period during which a series of rocks is formed
the Pleistocene epoch
5. physics
the displacement of an oscillating or vibrating body at zero time

Collins English Dictionary. Copyright © HarperCollins Publishers

Epoch

see synonyms of epoch
noun
1. 
the beginning of a new and important period in the history of anything
the first earth satellite marked a new epoch in the study of the universe
2. 
a period of time considered in terms of noteworthy and characteristic events, developments, persons, etc.
an epoch of social revolution
3. 
a point in time or a precise date
4.  Astronomy
the time at which observations are made, as of the positions of planets or stars
5.  Geology
a subdivision of a period in geologic time corresponding to the rock strata of a series (sense 6)

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Epoch

see synonyms of epoch
n.
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.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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