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Definition of Precambrian
1. Noun. The eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago.
Exact synonyms: Precambrian Aeon, Precambrian Eon, Precambrian Period
Terms within: Proterozoic, Proterozoic Aeon, Proterozoic Eon, Archaeozoic, Archaeozoic Aeon, Archean, Archean Aeon, Archean Eon, Archeozoic, Archeozoic Eon
Generic synonyms: Aeon, Eon
Terms within: Proterozoic, Proterozoic Aeon, Proterozoic Eon, Archaeozoic, Archaeozoic Aeon, Archean, Archean Aeon, Archean Eon, Archeozoic, Archeozoic Eon
Generic synonyms: Aeon, Eon