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Orosirian

From Wiktionary, the free dictionary

English

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Adjective

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Orosirian (not comparable)

  1. (geology) Of a geologic period within the Paleoproterozoic era from about 2050 to 1800 million years ago.

Proper noun

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Orosirian

  1. (geology) The Orosirian period.

Translations

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See also

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