Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • A river, about 3,700 km (2,300 mi) long, of central Russia flowing generally northward to the Gulf of Ob, an arm of the Arctic Ocean.

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

  • proper noun A major river in western Siberia, Russia.
  • noun category theory The set of objects of a category.

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