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The half of the earth west of the Prime Meridian. The Western Hemisphere is often defined more narrowly as including just North America, Central America, and South America.
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.
n (often capitals)
1. (Physical Geography) that half of the globe containing the Americas, lying to the west of the Greenwich or another meridian
2. (Physical Geography) the lands contained in this, esp the Americas
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. the part of the globe west of the Atlantic, including North and South America, their islands, and the surrounding waters.
2. that half of the earth traversed in passing westward from the prime meridian to 180° longitude.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The half of the Earth that includes North America, Central America, and South America.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||western hemisphere - the hemisphere that includes North America and South America|
hemisphere - half of the terrestrial globe
North America - a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama
South America - a continent in the western hemisphere connected to North America by the Isthmus of Panama
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