Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective geology Of a geologic period within the Paleoproterozoic era from about 2500 to 2300 million years ago.
  • proper noun geology The Siderian period.

Etymologies

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Examples

  • In 2007, for instance, he was appointed to the advisory board of Siderian, a San Francisco-based venture capital firm specialising in 'sustainable technologies', where he was expected to provide the Fund with 'access, standing and industrial exposure at the highest level',

    Telegraph.co.uk: news, business, sport, the Daily Telegraph newspaper, Sunday Telegraph 2009

  • In 2007, for instance, he was appointed to the advisory board of Siderian, a San Francisco-based venture capital firm specialising in 'sustainable technologies', where he was expected to provide the Fund with 'access, standing and industrial exposure at the highest level',

    WHAT REALLY HAPPENED Nilwik 2009

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