Rubʼ al Khali[ro̵ob′ äl kä′lē]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
large desert of S Arabia: c. 250,000 sq mi (647,498 sq km)
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Sometimes called “the Empty Quarter.”
A desert region in the southeast interior of the Arabian Peninsula. Virtually without water and uninhabited, it was first visited by an English explorer in 1932 but has not yet been completely explored.