|Origin:||functio, from fungi 'to perform'|
1 [uncountable and countable]
the purpose that something has, or the job that someone or something does
perform/fulfil a function
In your new job you will perform a variety of functions.
The church fulfils a valuable social function.
The nervous system regulates our bodily functions (=eating, breathing, going to the toilet etc).
Bauhaus architects thought that function was more important than form.
a large party or official event:
This room may be hired for weddings and other functions.
3 [countable usually singular] technical
a quantity or quality whose value changes according to another quantity or quality that is related to it:
The degree of drought is largely a function of temperature and drainage.
one of the basic operations performed by a computer