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Rubʿ al Khali

American  
[roob ahl khah-lee, roob al kah-lee] / ˌrʊb ɑl ˈxɑ li, ˌrʊb æl ˈkɑ li /

noun

  1. a desert in southern Arabia, north of Hadhramaut and extending from Yemen to Oman. About 250,000 sq. mi. (647,500 sq. km).

Rub` al Khali British  
/ ˈrʊb æl ˈkɑːlɪ /

noun

  1. Also called: Ar Rimal.  English names: Great Sandy Desert.   Empty Quarter.  a desert in S Arabia, mainly in Saudi Arabia, extending southeast from Nejd to Hadramaut and northeast from Yemen to the United Arab Emirates. Area: about 777 000 sq km (300 000 sq miles)

"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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.