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EPOCH

Pronunciation (US): 

English dictionary: Word overview

EPOCH (noun)
  The noun EPOCH has 3 senses:

1. a period marked by distinctive character or reckoned from a fixed point or event
2. (astronomy) the precise date that is the point of reference for which information (as coordinates of a celestial body) is referred
3. a unit of geological time

  Familiarity information: EPOCH used as a noun is uncommon.


English dictionary: Word details


EPOCH (noun)


Sense 1epoch [BACK TO TOP]

Meaning:

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

Classified under:

Nouns denoting time and temporal relations

Synonyms:

epoch; era

Hypernyms ("epoch" is a kind of...):

period; period of time; time period (an amount of time)

Hyponyms (each of the following is a kind of "epoch"):

day (an era of existence or influence)

age; historic period (an era of history having some distinctive feature)

modern era (the present or recent times)

Instance hyponyms:

Caliphate (the era of Islam's ascendancy from the death of Mohammed until the 13th century; some Moslems still maintain that the Moslem world must always have a calif as head of the community)

Christian era; Common era (the time period beginning with the supposed year of Christ's birth)


Sense 2epoch [BACK TO TOP]

Meaning:

(astronomy) the precise date that is the point of reference for which information (as coordinates of a celestial body) is referred

Classified under:

Nouns denoting time and temporal relations

Synonyms:

date of reference; epoch

Hypernyms ("epoch" is a kind of...):

date (the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred)

Domain category:

astronomy; uranology (the branch of physics that studies celestial bodies and the universe as a whole)


Sense 3epoch [BACK TO TOP]

Meaning:

A unit of geological time

Classified under:

Nouns denoting time and temporal relations

Hypernyms ("epoch" is a kind of...):

geologic time; geological time (the time of the physical formation and development of the earth (especially prior to human history))

Instance hyponyms:

Holocene; Holocene epoch; Recent; Recent epoch (approximately the last 10,000 years)

Paleocene; Paleocene epoch (from 63 million to 58 million years ago; appearance of birds and earliest mammals)

Eocene; Eocene epoch (from 58 million to 40 million years ago; presence of modern mammals)

Oligocene; Oligocene epoch (from 40 million to 25 million years ago; appearance of sabertoothed cats)

Miocene; Miocene epoch (from 25 million to 13 million years ago; appearance of grazing mammals)

Pliocene; Pliocene epoch (from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals)

Glacial epoch; Pleistocene; Pleistocene epoch (from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution)

Holonyms ("epoch" is a part of...):

geological period; period (a unit of geological time during which a system of rocks formed)


English Proverbs
"Worrying is like sitting in a rocking chair. It gives you something to do but it doesn't get you anywhere"
(English proverb)
"He who does not work, must not eat."
(Bulgarian proverb)
"Visit rarely, and you will be more loved."
(Arabic proverb)
"Knowledge is in the head, not the copybook."
(Egyptian proverb)


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