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function

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Function

function is one of the 1000 most common headwords.

fun - function - fund

function is on the Academic Word List.

Pronunciation

IPA ^(key): /ˈfʌŋk.ʃən/
SAMPA: /"fVNkS@n/
Audio (US) (file)
Hyphenation: func‧tion

Noun

Singular
function

Plural
functions

Function is on the Academic Vocabulary List.

(countable & uncountable) Something or someone's function is its purpose or its job.
The army sometimes performs a policing function.
(countable) A function is an organised event.
I met Sylvia at a church function last week.
(countable) If $X$ is a function of $Y$ , then $X$ exists because of or is affected by $Y$
The speed of the computer is a function of its main processor.

When you see, $Y=f(X)$ , you read it, " $Y$ is a function of $X$ ". Here the value of $Y$ depends on the value assigned to the variable $X$ .

Verb

Plain form
function

Third-person singular
functions

Past tense
functioned

Past participle
functioned

Present participle
functioning

(intransitive) If something is functioning, it is working and is not completely broken.
Her heart stopped, but her brain continued to function.
(intransitive) If something functions as $X$ , it does the job of $X$ .
In this sentence, "sentence" functions as the subject.

Synonyms

work
run

Related words

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