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Agnotozoic

noun or adjective
Ag·​no·​to·​zo·​ic | \ ag-¦nō-tə-¦zō-ik, ¦ag-ˌnō-\

Definition of Agnotozoic

: algonkian , proterozoic

First Known Use of Agnotozoic

1887, in the meaning defined above

History and Etymology for Agnotozoic

International Scientific Vocabulary agnoto- (from Greek agnōtos unknown) + -zoic

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