from The American Heritage® Dictionary of the English Language, 4th Edition

  • A vast desert of northern Africa extending east from the Atlantic coast to the Nile Valley and south from the Atlas Mountains to the region of the Sudan. During the Ice Age (about 50,000 to 100,000 years ago), the Sahara was a region of extensive shallow lakes watering large areas of vegetation, most of which had disappeared by Roman times. Introduction of the camel (probably in the first century A.D.) led to occupation by nomadic tribes who moved from oasis to oasis in search of water.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A desert in North Africa, the largest hot desert in the world.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the world's largest desert (3,500,000 square miles) in northern Africa


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Arabic صحراء “desert” (Sahara Desert is thus a pleonasm.)



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