Precambrian
or Pre-Cam·bri·an
noting or pertaining to the earliest era of earth history, ending 570 million years ago, during which the earth's crust formed and life first appeared in the seas.
the Precambrian Era.
Origin of Precambrian
1Words Nearby Precambrian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use Precambrian in a sentence
We may take our own country as a region where a good development of the Precambrian rocks occurs.
The Principles of Stratigraphical Geology | J. E. MarrA few explanatory remarks concerning the mode of detection of Precambrian rocks may not be amiss.
The Principles of Stratigraphical Geology | J. E. MarrThese Torridonian strata furnish us with the most satisfactory group of Precambrian sediments yet detected in Britain.
The Principles of Stratigraphical Geology | J. E. Marr
British Dictionary definitions for Precambrian
Pre-Cambrian
/ (priːˈkæmbrɪən) /
of, denoting, or formed in the earliest geological era, which lasted for about 4 000 000 000 years before the Cambrian period
the Precambrian the Precambrian era: See Archaeozoic, Proterozoic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for Precambrian
[ prē-kăm′brē-ən, -kām′- ]
The period of geologic time between Hadean Time and the Phanerozoic Eon, from about 3.8 billion to 540 million years ago. During the Precambrian Eon, which is divided into the Archean and Proterozoic, primitive forms of life first appeared on Earth. See Chart at geologic time.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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