microcode

mi cro code |ˈmīkrəˌkōd ˈmaɪkroʊkoʊd | ▶noun Computing a very low-level instruction set that is stored permanently in a computer or peripheral controller and controls the operation of the device.

microcode

micro |code |ˈmʌɪkrə (ʊ )kəʊd | ▶noun [ mass noun ] Computing a very low-level instruction set which is stored permanently in a computer or peripheral controller and controls the operation of the device.