Precambrian
Meanings
Adjective
- Relating to the time and geology dated before the Phanerozoic
Proper Noun
- The eon (or supereon) and rock formations dated before 541.0±1.0 million years ago, coinciding with the first appearance of the fossils of hard-shelled animals.
Related
Similar words
Narrower meaning words
- Hadean, Archaean, Proterozoic - eons
Origin
Modern English dictionary
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