English noun: Precambrian eon | |||
1. | Precambrian eon (time) 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, Precambrian aeon, Precambrian period | ||
Instance hypernym | aeon, eon | ||
Part holonym | Archaeozoic, Archaeozoic aeon, Archean, Archean aeon, Archean eon, Archeozoic, Archeozoic eon, Proterozoic, Proterozoic aeon, Proterozoic eon | ||