a sultanate in SE Arabia, on the Gulf of Oman and the Arabian Sea: the most powerful state in Arabia in the 19th century, ruling Zanzibar, much of the Persian coast, and part of Pakistan. Official language: Arabic. Official religion: Muslim. Currency: rial. Capital: Muscat. Pop: 4 636 262 (2017 est). Area: about 306 000 sq km (118 150 sq miles)
Former name (until 1970): Muscat and Oman
Oman in American English
(oʊˈmɑn)
1.
SE coastal region of Arabia, on the Arabian Sea
2.
country in this region: an independent sultanate: 119,499 sq mi (309,500 sq km); pop. 2,070,000; cap. Muscat
3.
Gulf ofarm of the Arabian Sea, between Iran & Oman in Arabia: c. 350 mi (563 km) long