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Siderian Moderate

Siderian has 2 different meanings across 1 category:

Proper Noun

Definitions
Adjective
1

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

Proper Noun
1

The Siderian period.

See Also
paleoproterozoic era geologic period
Related Terms
Rhyming Words
ian sian jian bian rian dian qian kian vian xian gian lian asian elian brian ilian apian arian avian chian
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