01 a. Of or pertaining to Cambria or Wales.
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1.
Of or pertaining to Cambria or Wales.(Geog.)
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2.
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.(Geol.) See: Geology