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2 ENTRIES FOUND:

Precambrian

adjective Pre·cam·bri·an \(ˌ)prē-ˈkam-brē-ən, -ˈkām-\

Definition of PRECAMBRIAN

:  of, relating to, or being the earliest era of geological history or the corresponding system of rocks that is characterized especially by the appearance of single-celled organisms and is equivalent to the Archean and Proterozoic eons — see geologic time table
Precambrian noun

First Known Use of PRECAMBRIAN

1864

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