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cambrian |
4 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Primordial \Pri*mor"di*al\, a. [L. primordialis, from primordium the first beginning; primus first + ordiri to begin a web, to begin: cf F. primordial.] 1. First in order primary; original; of earliest origin; as primordial condition. ``The primordial facts of our intelligent nature.'' --Sir W. Hamilton. 2. (Geol.) Of or pertaining to the lowest beds of the Silurian age, corresponding to the Acadian and Potsdam periods in American geology. It is called also {Cambrian}, and by many geologists is separated from the Silurian. 3. (Biol.) Originally or earliest formed in the growth of an individual or organ; as a primordial leaf; a primordial cell. {Primordial utricle} (Bot.), the interior lining of a young vegetable cell. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Cambrian \Cam"bri*an\, a. 1. (Geog.) Of or pertaining to Cambria or Wales. 2. (Geol.) Of or pertaining to the lowest subdivision of the rocks of the Silurian or Molluscan age; -- sometimes described as inferior to the Silurian. It is named from its development in Cambria or Wales. See the Diagram under {Geology}. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Cambrian \Cam"bri*an\, n. 1. A native of Cambria or Wales. 2. (Geol.) The Cambrian formation. From WordNet r 1.6 [wn]: Cambrian n : from 500 million to 600 million years ago; marine invertebrates [syn: {Cambrian}, {Cambrian period}]
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