Cambrian

Definition:

(a.) Of or pertaining to Cambria or Wales.
(a.) 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.
(n.) A native of Cambria or Wales.
(n.) The Cambrian formation.

Compare cambrian with other words:

cambrian vs. graptolite