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A high plateau of western Antarctica south of the Antarctic Peninsula. It includes the Ellsworth Mountains, rising to 4,892 m (16,050 ft) at Vinson Massif.
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.