large desert of S Arabia: c. 250,000 sq mi (647,498 sq km)
See Rubʼ al Khali in American Heritage Dictionary 4
(ro͝obˌ ăl käˈlē, äl ᴋʜäˈlē) 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.
