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Definition of function

function

/ˈfʌŋk.ʃən/
func · tion

Adverb:functionally
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Plural:functions
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Adjective:functional
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Past Simple:functioned
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Past Participle:functioned
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Present Participle:functioning
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function Lexical Profile

function Game Scores & Validity

• noun

1

An activity, role, or purpose natural to or intended for a person or thing.

Example

"The primary function of the heart is to pump blood throughout the body."


2

A mathematical relation or expression involving one or more variables in which each input is associated with exactly one output.

Example

"Students learned how to graph a linear function on the coordinate plane."


3

A self-contained section of a computer program that performs a specific task or calculation.

Example

"The developer wrote a helper function to validate user email addresses."


4

A large or formal social event or ceremony.

Example

"As mayor, she is required to attend numerous charity functions throughout the year."

Synonyms
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Antonyms
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• verb

1

To work or operate in a proper or particular way.

Example

"Despite the power outage, the hospital's emergency generators continued to function normally."


2

To fulfill the purpose or task of a specified thing (usually followed by 'as').

Example

"During the summer months, the university dormitory functions as a hotel for visiting scholars."

Synonyms
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Antonyms
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• Rhymes for function

Word Origin & Etymology

Borrowed in the 16th century from Middle French fonction, from Latin functio ('a performance, an execution'), a noun of action derived from the verb fungi ('to perform, execute, or discharge a duty').

Cite this Entry


Wordmom. (2026). Definition of Function. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/function
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