Siderian

形容词 adj. 专有名词
中文释义

英文释义

形容词 adj.
  1. Of a geologic period within the Paleoproterozoic era from about 2500 to 2300 million years ago.
专有名词
  1. The Siderian period.

词形变化

more Siderian comparative most Siderian superlative

词源

词源 1
From Greek sideros.
词源 2
From Greek sideros.
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