An instruction that defines a macro. In assembly language, MACRO and ENDM are examples that define the beginning and end of a macro. In C, the #DEFINE statement is used.
"macro instruction." YourDictionary, n.d. Web. 16 August 2018. <http://www.yourdictionary.com/macro-instruction>.
macro instruction. (n.d.). Retrieved August 16th, 2018, from http://www.yourdictionary.com/macro-instruction