- of, denoting, or formed in the earliest geological era, which lasted for about 4 000 000 000 years before the Cambrian period
- the Precambrian ⇒ the Precambrian era
| 单词 | pre-cambrian |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 Pre•cam•bri•an (prē kam′brē ən, -kām′-),USA pronunciation [Geol.] adj.
n.
Collins Concise English Dictionary © HarperCollins Publishers:: Precambrian, Pre-Cambrian /priːˈkæmbrɪən/ adj
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