dry, grassy region in S South America, east of the Andes, including the S parts of Argentina and Chile: often restricted to the portion, c. 250,000 sq mi (647,498 sq km), in Argentina
See Patagonia in American Heritage Dictionary 4
A tableland region of South America in southern Argentina and Chile extending from the Río Colorado to the Straits of Magellan and from the Andes to the Atlantic Ocean. The study of its original inhabitants, the Tehuelche (“the Patagonian giants”), and its unusual wildlife have attracted many scientific expeditions, including that of Charles Darwin (1831-1836).