'Epoch' definitions:

Definition of 'epoch'

(from WordNet)
noun
A period marked by distinctive character or reckoned from a fixed point or event [syn: era, epoch]
noun
(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded [syn: epoch, date of reference]
noun
A unit of geological time that is a subdivision of a period and is itself divided into ages

Definition of 'Epoch'

From: GCIDE
  • Epoch \Ep"och\ ([e^]p"[o^]k or [=e]"p[o^]k; 277), n. [LL. epocha, Gr. 'epochh` check, stop, an epoch of a star, an historical epoch, fr. 'epe`chein to hold on, check; 'epi` upon + 'e`chein to have, hold; akin to Skr. sah to overpower, Goth. sigis victory, AS. sigor, sige, G. sieg: cf. F. ['e]poque. See Scheme.]
  • 1. A fixed point of time, established in history by the occurrence of some grand or remarkable event; a point of time marked by an event of great subsequent influence; as, the epoch of the creation; the birth of Christ was the epoch which gave rise to the Christian era. [1913 Webster]
  • In divers ages, . . . divers epochs of time were used. --Usher. [1913 Webster]
  • Great epochs and crises in the kingdom of God. --Trench. [1913 Webster]
  • The acquittal of the bishops was not the only event which makes the 30th of June, 1688, a great epoch in history. --Macaulay. [1913 Webster]
  • Note: Epochs mark the beginning of new historical periods, and dates are often numbered from them. [1913 Webster]
  • 2. A period of time, longer or shorter, remarkable for events of great subsequent influence; a memorable period; as, the epoch of maritime discovery, or of the Reformation. "So vast an epoch of time." --F. Harrison. [1913 Webster]
  • The influence of Chaucer continued to live even during the dreary interval which separates from one another two important epochs of our literary history. --A. W. Ward. [1913 Webster]
  • 3. (Geol.) A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period. [1913 Webster]
  • The long geological epoch which stored up the vast coal measures. --J. C. Shairp. [1913 Webster]
  • 4. (Astron.) (a) The date at which a planet or comet has a longitude or position. (b) An arbitrary fixed date, for which the elements used in computing the place of a planet, or other heavenly body, at any other date, are given; as, the epoch of Mars; lunar elements for the epoch March 1st, 1860.
  • Syn: Era; time; date; period; age.
  • Usage: Epoch, Era. We speak of the era of the Reformation, when we think of it as a period, during which a new order of things prevailed; so also, the era of good feeling, etc. Had we been thinking of the time as marked by certain great events, or as a period in which great results were effected, we should have called the times when these events happened epochs, and the whole period an epoch. [1913 Webster]
  • The capture of Constantinople is an epoch in the history of Mahometanism; but the flight of Mahomet is its era. --C. J. Smith. [1913 Webster]

Synonyms of 'epoch'

From: Moby Thesaurus

Words containing 'Epoch'