Definition of epoch

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Epoch (n.) A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period.

Lern More About Epoch

Epi- :: Epi- () A prefix, meaning upon, beside, among, on the outside, above, over. It becomes ep-before a vowel, as in epoch, and eph-before a Greek aspirate, as in ephemeral..
Epoch :: Epoch (n.) 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..
Pleistocene :: Pleistocene (n.) The Pleistocene epoch, or deposits..
Liriodendron :: Liriodendron (n.) A genus of large and very beautiful trees of North America, having smooth, shining leaves, and handsome, tuliplike flowers; tulip tree; whitewood; -- called also canoewood. Liriodendron tulipifera is the only extant species, but there were several others in the Cretaceous epoch..
Era :: Era (n.) A period of time reckoned from some particular date or epoch; a succession of years dating from some important event; as, the era of Alexander; the era of Christ, or the Christian era (see under Christian)..
Chemung Period :: Chemung period () A subdivision in the upper part of the Devonian system in America, so named from the Chemung River, along which the rocks are well developed. It includes the Portage and Chemung groups or epochs. See the Diagram under Geology..
Pleistocene :: Pleistocene (a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man..
Cincinnati Epoch :: Cincinnati epoch () An epoch at the close of the American lower Silurian system. The rocks are well developed near Cincinnati, Ohio. The group includes the Hudson River and Lorraine shales of New York..
Medina Epoch :: Medina epoch () A subdivision of the Niagara period in the American upper Silurian, characterized by the formations known as the Oneida conglomerate, and the Medina sandstone. See the Chart of Geology..
Niagara Period :: Niagara period () A subdivision or the American Upper Silurian system, embracing the Medina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology..
Epoch :: Epoch (n.) A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period.
Incunabulum :: Incunabulum (n.) A work of art or of human industry, of an early epoch; especially, a book printed before a. d. 1500..
Renaissance :: Renaissance (n.) The style of art which prevailed at this epoch.
Carving :: Carving (n.) The whole body of decorative sculpture of any kind or epoch, or in any material; as, the Italian carving of the 15th century..
Surcrew :: Surcoat (n.) A name given to the outer garment of either sex at different epochs of the Middle Ages.
Archaeology :: Archaeology (n.) The science or study of antiquities, esp. prehistoric antiquities, such as the remains of buildings or monuments of an early epoch, inscriptions, implements, and other relics, written manuscripts, etc..
Era :: Era (n.) A fixed point of time, usually an epoch, from which a series of years is reckoned..
Genesee Epoch :: Genesee epoch () The closing subdivision of the Hamilton period in the American Devonian system; -- so called because the formations of this period crop out in Genesee, New York..
Period :: Period (n.) A stated and recurring interval of time; more generally, an interval of time specified or left indefinite; a certain series of years, months, days, or the like; a time; a cycle; an age; an epoch; as, the period of the Roman republic..
Epoch :: Epoch (n.) 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..
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