n]
| 1. | Geology. noting or pertaining to a period of the Paleozoic Era, occurring from 570 million to 500 million years ago, when algae and marine invertebrates were the predominant form of life. |
| 2. | of or pertaining to Cambria; Welsh. |
| 3. | Geology. the Cambrian Period or System. |
| 4. | a native of Cambria; Welshman. |
Cam·bri·an (kām'brē-ən, kām'-) adj.
[From Medieval Latin Cambria, Wales, alteration of Cumbria from Welsh Cymry. Adj., sense 2, and n., sense 2, after Cambria.] |