subroutine: meaning, definition, pronunciation and examples
C2Technical, formal
Quick answer
What does “subroutine” mean?
A sequence of instructions within a computer program that performs a specific task and can be called from other parts of the program.
Audio
Pronunciation
Definition
Meaning and Definition
A sequence of instructions within a computer program that performs a specific task and can be called from other parts of the program.
A distinct, reusable block of code designed to execute a particular operation, often used to avoid code duplication and improve modularity. By extension, it can metaphorically describe any set of procedures followed as a standard part of a larger process.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling and pronunciation are consistent.
Connotations
None beyond its technical definition in both varieties.
Frequency
Equally frequent in UK and US computing contexts.
Grammar
How to Use “subroutine” in a Sentence
The program calls the [subroutine].The [subroutine] calculates the result.A [subroutine] for handling errors was written.To define a [subroutine] that...Vocabulary
Collocations
Usage
Meaning in Context
Business
Virtually unused except in IT departments discussing software development.
Academic
Common in computer science, software engineering, and computational linguistics papers.
Everyday
Extremely rare. Would be understood only by those with programming knowledge.
Technical
The primary domain. Ubiquitous in programming manuals, code documentation, and developer discussions.
Watch out
Common Mistakes When Using “subroutine”
- Using it as a verb (e.g., 'to subroutine the code').
- Misspelling as 'sub-routine' (hyphenation is dated).
- Using it in non-technical contexts where it would confuse listeners.
FAQ
Frequently Asked Questions
In many programming languages, they are very similar. Historically, a 'subroutine' was a broader term, while a 'function' specifically returns a value. In modern usage, especially in languages like Python, they are often used interchangeably, though 'function' is more common.
It is not recommended. It is a technical term from computing. In everyday conversation, it would likely confuse people unless they have a programming background. Use words like 'process', 'set of steps', or 'procedure' instead.
The main benefits are modularity and reusability. It allows a programmer to write a block of code once and use it many times, making programs easier to read, debug, and maintain.
A subroutine is 'called' or 'invoked' by using its name in the main program or another subroutine. When called, the program's execution jumps to the subroutine, runs its code, and then returns to the point just after where it was called.
A sequence of instructions within a computer program that performs a specific task and can be called from other parts of the program.
Subroutine is usually technical, formal in register.
Subroutine: in British English it is pronounced /ˌsʌbruːˈtiːn/, and in American English it is pronounced /ˈsʌbˌruːtiːn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Learning
Memory Aids
Mnemonic
Think of a SUBmarine performing a specific ROUTINE: a self-contained unit (sub) with a set sequence of actions (routine) that can be deployed from the main vessel.
Conceptual Metaphor
A TOOL IN A TOOLBOX (a specialized instrument you take out, use, and put back). A MINI-PROGRAM WITHIN A PROGRAM.
Practice
Quiz
In which field is the term 'subroutine' most precisely and commonly used?