- a peninsula in SW Asia, including Saudi Arabia, Yemen Arab Republic, People's Democratic Republic of Yemen, Oman, the United Arab Emirates, Qatar, and Kuwait: divided in ancient times into Arabia Deserta, Arabia Petraea, and Arabia Felix. About 1,000,000 sq. mi. (2,600,000 sq. km).
- a great peninsula of SW Asia, between the Red Sea and the Persian Gulf: consists chiefly of a desert plateau, with mountains rising over 3000 m (10 000 ft) in the west and scattered oases; includes the present-day countries of Saudi Arabia, Yemen, Oman, Bahrain, Qatar, Kuwait, and the United Arab Emirates. Area: about 2 600 000 sq km (1 000 000 sq miles)