Cambrian definitions

kăm'brē-ən, kām'-
Of or relating to Wales; Welsh.
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Of, relating to, or being the period of geologic time from about 542 to 488 million years ago, the oldest period of the Paleozoic Era. The Cambrian Period is characterized by desert land areas, warm seas, and rapid early diversification of marine life resulting in the rise of almost all modern animal phyla.
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A Welshman or Welshwoman.
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The Cambrian Period.
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Of Cambria; Welsh.
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Designating or of the first geologic period of the Paleozoic Era, characterized by the development of warm, shallow seas and the first hard-shelled marine animals, esp. trilobites and brachiopods.
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A person born or living in Cambria; Welshman.
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The first period of the Paleozoic Era, from about 540 to 505 million years ago. During this time warm seas and desert land areas were widespread, and animal life diversified rapidly during what is known as the Cambrian Explosion .
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(geology) Of a geologic period within the Paleozoic era; comprises lower, middle and Furongian epochs from about 542 to 490 million years ago.
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Of, or relating to Wales.
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(geology) The Cambrian period.
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A Welsh person.
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Origin of cambrian

From Medieval Latin Cambria , Wales alteration of Cumbria from Welsh Cymry Adj., sense 2, and n., sense 2, after Cambria