microprogram Syllabification: (mi·cro·pro·gram)Pronunciation: /ˈmīkrəˌprōgrəm, -gram/Definition of microprogram noun a microinstruction program that controls the functions of a central processing unit or peripheral controller of a computer. verb [with object] use microprogramming with (a computer); bring about by means of a microprogram:by 1980 virtually all computers were microprogrammedDerivatives microprogrammable adjective microprogrammer noun microprogram in other Oxford dictionaries Definition of microprogram in the British & World English dictionary