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prebend
prebendary
prebilling
prebiological
prebiotic
prebuilt
precalc
precalculus
Precambrian
precancel
precancerous
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precautionary demand
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Precambrian
Pre·cam·bri·an [ pree kámbree ən ]


noun 
Definition:
 
earliest geologic period: the period of geologic time, 4,650 to 700 million years ago, during which the Earth's crust consolidated and primitive life first appeared

Pre·cam·bri·an adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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