Tonian

形容词 adj. 专有名词
/ˈtəʊ.ni.ən/    /ˈtoʊ.ni.ən/

英文释义

形容词 adj.
  1. Of a geologic period within the Neoproterozoic era from about 1000 to 850 million years ago. not-comparable
专有名词
  1. The Tonian period.

词源

词源 1
From Ancient Greek τόνος (tónos, “stretch”).
词源 2
From Ancient Greek τόνος (tónos, “stretch”).
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