A set of computer instructions to carry out a predefined function or computation. Note: "Open" subroutines are integrated into the main program . "Closed" subroutines are arranged so that program control is shifted to them for execution of their task(s) and then returned to the main program.
SUBROUTINE
Meaning of SUBROUTINE in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012