microinstruction: Meaning and Definition of

mi•cro•in•struc•tion

Pronunciation: (mī"krō-in-struk'shun), [key]
— n. Computers.
  1. an instruction that defines part of a machine-language instruction in terms of simpler operations.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.