microinstruction

American  

[mahy-kroh-in-struhk-shuhn] / ˌmaɪ kroʊ ɪnˈstrʌk ʃən /

noun

Computers.

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

---

microinstruction British  

/ 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

---

Etymology

Origin of microinstruction

First recorded in 1955–60; micro- + instruction