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American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Spanish ˈtʃako)
(Placename) See Gran Chaco
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtʃɑ kɔ)

1. a part of the Gran Chaco region in central South America, in Bolivia, Paraguay, and Argentina. ab. 100,000 sq. mi. (259,000 sq. km).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Estudios cuantitativos en las sabanas de "Karanda'y", Copernicia alba Morong, en el Chaco Boreal y la Sub-cuenca del lago Ypacarai, Paraguay.
Aproximacion a las representaciones animicas de los indios Nivacle del Chaco Boreal. Seminario de investigaciones sobre Epidemiologia Psiquiatrica 50:2-43.
After winning independence from Spain in the early nineteenth century, Paraguayans and Bolivians failed to agree over the boundary that separated them in the sparsely inhabited Chaco Boreal, a harsh wilderness of about 100,000 square miles between the Pilcomayo River and the Paraguay River.
The most significant expeditions in the Northern Chaco (or Chaco Boreal) were the following: Manuel Luis de Oliden (1832), Francis de la Porte Castelnau (1843-47), Manuel Rodriguez Magarinos (1843-44), Enrique van Nivel (1844), Father Jose Gianelli (1863), Andres Rivas (1864), Jose Domingo Vargas (1868), Jules Crevaux (1882), Daniel Campos (1883), Arthur Thouar (1886), Henry Bolland (1901), Percy H.
Systematics and zoogeography of the bats of the Chaco Boreal. Miscellaneous publications of the Museum of Zoology, University of Michigan 165:1-59.