Riphaean

发音

UK /ˈɹɪfɪən/
UK /ˈɹʌɪfɪən/

词形变化

the Riphaean

别名

Riphæan Riphean Riphœan Riphoean

释义与例句

adj.
  1. 1.

    Designating a range of mountains once thought to be located in northern Europe, later considered mythological or identified with the Urals.

    历史
name
  1. 1.

    An age from 1650 to 650 million years ago, a subdivision of the Proterozoic.

    地质

词源

From Latin Rīphaeus + -an. Compare Rhipaean.

来源：wiktionary