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region in northwestern Asia, the name said to come from Sibir, ancient Tatar fortress at the confluence of the Tobol and Irtysh rivers. As a typical place of miserable banishment, it is attested from 1841. Related: Siberian.
Note: Known for its vast space, long and severely cold winters, and few inhabitants widely scattered in small settlements, Siberia has been for many centuries a place of political and criminal exile for Russians who anger the government's authorities.