the western part of the terrestrial globe, including North and South America, their islands, and the surrounding waters.
that half of the earth traversed in passing westward from the prime meridian to 180° longitude.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun (often capitals)
that half of the globe containing the Americas, lying to the west of the Greenwich or another meridian
the lands contained in this, esp the Americas
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
[ wĕs′tərn ]
The half of the Earth that includes North America, Central America, and South America, as divided roughly by the 0° and 180° meridians. See more at prime meridian.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.