Definition of subroutine noun from the Oxford Advanced American Dictionary

 

subroutine

 noun
noun
NAmE//ˈsʌbruˌtin//
 
(also subprogram
NAmE//ˈsʌbˌproʊɡræm//
 
)
(computing)
 
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a set of instructions that repeatedly perform a task within a program
See the Oxford Advanced Learner's Dictionary entry: subroutine