external subprogram
Computing term for a subprogram defined outside the current program unit, such as an external function or subroutine.
このプログラムは外部副プログラムを呼び出して処理を行う。
This program calls an external subprogram to perform processing.
Compound of 外部 (external) + 副 (sub-, auxiliary) + プログラム (program). A technical term formed from standard components.