microinstruction

[ mahy-kroh-in-struhk-shuhn ]

noun

, Computers.

1. an instruction that defines part of a machine-language instruction in terms of simpler operations.

microinstruction

/ ˈmaɪkrəʊɪnˌstrʌkʃən /

noun

1. computing an instruction produced within an arithmetic and logic unit in accordance with a microprogram, that activates a particular circuit to perform part of the operation specified by a machine instruction

Word History and Origins

Origin of microinstruction¹

First recorded in 1955–60; micro- + instruction