Siderian

English

Adjective

Siderian (comparative more Siderian, superlative most Siderian)

  1. (geology) Of a geologic period within the Paleoproterozoic era from about 2500 to 2300 million years ago.

Proper noun

Siderian

  1. (geology) The Siderian period.

Translations

See also

  • Appendix:Geologic timescale

Anagrams

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