Definition of Zambia from the Oxford Advanced Learner's Dictionary

a country in southern central Africa. As Northern Rhodesia it was formerly part of the British Empire and became independent and a member of the Commonwealth in 1964. Zambia has many minerals and produces a large amount of the world's copper (= a soft reddish-brown metal). Its official language is English and its capital city is Lusaka. See related entries: Countries and continents
See the Oxford Advanced American Dictionary entry: Zambia