precambrian_period | ||
1. | [ noun ] (geology) the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago | |
Synonyms: | precambrian_aeon precambrian_eon Precambrian | |
Related terms: | geological_time era eon Archeozoic archaeozoic Proterozoic | |
Similar spelling: |
precambrian_eon precambrian_aeon |