subroutine
noun/ˈsʌbˌruːtiːn/
Frequency rank: #19,196 of 20,003 in the WORDED list (wordfreq data)
Meaning
a set of instructions within a program that performs a specific task and can be called from other parts of the program.

Example sentence
The programmer wrote a small subroutine to handle user login so the code could be reused throughout the application.
Synonyms & related words
More words in ranks 19,101–19,200
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