Ajman (äjmänˈ) [key], sheikhdom (1995 pop. 118,812), c.100 sq mi (260 sq km), part of the federation of seven United Arab Emirates, SE Arabia, primarily on the Persian Gulf. The smallest member of the federation, Ajman consists principally of a town (1995 pop. 118,812) of the same name and two mountain villages. A former British protectorate, it joined the United Arab Emirates in 1971. Ajman has little industry or agriculture and depends heavily on aid from other Persian Gulf countries.