·noun The Cambrian formation.
II. Cambrian ·noun A native of Cambria or Wales.
III. Cambrian ·adj Of or pertaining to Cambria or Wales.
IV. Cambrian ·adj 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.