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词汇 Priscoan
释义

Definition of Priscoan in English:

Priscoan

adjectiveˈprɪskəʊənprɪˈskəʊənprisˈkōən
Geology

  • 1Relating to or denoting the aeon that (in some schemes) constitutes the earliest part of the Precambrian, preceding the Archaean aeon. It extended from the origin of the earth to about 4,000 million years ago, and has left no identifiable rocks.

    〔地质〕（太古代前）前寒武纪初期的

    1. 1.1as noun the Priscoan The Priscoan aeon.
      前寒武纪初期地质宙

Origin

Formed irregularly from Latin priscus 'ancient' + -an.

Definition of Priscoan in US English:

Priscoan

adjectiveprisˈkōən
Geology

  • 1Relating to or denoting the eon that (in some schemes) constitutes the earliest part of the Precambrian, preceding the Archean eon. It extended from the origin of the earth to about 4 billion years ago and has left no so far identifiable rocks.

    〔地质〕（太古代前）前寒武纪初期的

    1. 1.1as noun the Priscoan The Priscoan eon.
      前寒武纪初期地质宙

Origin

Formed irregularly from Latin priscus ‘ancient’ + -an.
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