Student Dictionary

One entry found for Precambrian.
Main Entry: Pre·cam·bri·an
Pronunciation: (primarystress)premacron-primarystresskam-bremacron-schwan
Function: adjective
: of, relating to, or being the earliest era of geological history extending to the beginning of the Phanerozoic eon about 544,000,000 years ago; also : relating to the rocks formed during this time -- see GEOLOGIC TIME table
- Precambrian noun

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