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prebend
prebendary
prebilling
prebiological
prebiotic
prebuilt
precalc
precalculus
Precambrian
precancel
precancerous
precarious
precast
precatory
precaution
precautionary demand
precautionary motive
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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
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