[gee-an-uh, -ah-nuh, gahy-an-uh]
  1. a vast tropical region in NE South America, bounded by the Orinoco, Negro, and Amazon rivers and the Atlantic. About 690,000 sq. mi. (1,787,000 sq. km).
  2. the coastal portion of this region, which includes Guyana, French Guiana, and Suriname. 175,275 sq. mi. (453,962 sq. km).
Can be confusedGuiana Guinea Guyana Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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The Guianas

  1. a region of NE South America, including Guyana, Surinam, French Guiana, and the Guiana Highlands (largely in SE Venezuela and partly in N Brazil). Area: about 1 787 000 sq km (690 000 sq miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012