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Function - Meaning, Definition & English Examples

A function is a purpose or role something serves, or a mathematical relationship between inputs and outputs. In programming, it is a reusable block of code that performs a specific task.

function

/ˈfʌŋkʃən/ /ˈfʌŋkʃən/

Definition:

The purpose or role of something, or a mathematical relation assigning outputs to inputs.

Synonyms:

purpose, role, operation, task

Part of Speech:

noun, verb

Antonyms:

malfunction, failure

Common Collocations:

serve a function, perform a function, primary function, key function

Derivatives:

functional, functionally

Usage Tips:

Use "function" as a noun for roles or purposes and as a verb meaning to operate correctly.

Common Phrases:

function room, function key, bodily functions

Etymology:

From Latin "functio," meaning performance or execution.

Examples:

  • 1. The heart's main function is to pump blood throughout the body.
  • 2. This app helps you organize and function more efficiently at work.
  • 3. The new software update improves the device’s overall function and speed.
  • 4. A teacher’s function extends beyond just delivering lessons to mentoring students.

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