Of or pertaining to crystalline rocks of Pre-Cambrian age (see quots.). Also elliptical as n.
| 单词 | θ5405 |
| 释义 | the world > the earth > structure of the earth > age or period > [adjective] > pre-Cambrian > Archaean (2) Archaean1872 Of or pertaining to crystalline rocks of Pre-Cambrian age (see quots.). Also elliptical as n. Archaeozoic1878 Designating the part of Precambrian time, ending about 2,500 million years ago, which immediately preceded the Proterozoic eon; of, relating to, or… |
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