Cambrian

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.
n.	1.	A native of Cambria or Wales.
	2.	(Geol.) The Cambrian formation.

Noun	1.	Cambrian - from 544 million to about 500 million years ago; marine invertebrates Synonyms: Cambrian period
	2.	Cambrian - a native or resident of Wales Synonyms: Welsh, Welshman
Adj.	1.	Cambrian - of or relating to or characteristic of Wales or its people or their language; "the Welsh coast"; "Welsh syntax" Synonyms: Welsh

Cambria, Cymru, Wales, Welsh