WordGarden.iofunction
A2Pronunciation
UK
- /fˈʌŋkʃən/
US
- /ˈfəŋkʃən/
Meanings
Noun
the purpose or role that something has
a mathematical relationship that assigns outputs to inputs
a named block of computer code that performs a task
More meaningsFewer meanings
a formal or organized social event
Verb
to work or operate as intended
Beyond the definition
Everything has a function—a purpose it serves or a job it does. A hammer's function is to drive nails. Your heart's function is to pump blood. But "function" is not just about objects. It can also describe how something works or what someone does in a certain role. A person might function as a spokesperson, and a new app might function by connecting people with similar interests. In formal situations, it can also mean a special event or gathering. Think of it this way: something has a reason for being, a way of working, or a role to fill.
The word "function" can mean several things, all related to purpose and how something operates. At its core, a function is the specific task or role that something is designed to perform. This could be physical—like the function of a bridge being to allow passage over an obstacle—or more abstract.
You'll often hear "function" used in technical contexts. In mathematics, a function is a relationship between inputs and outputs; you put something in, and it produces a predictable result. In biology, the function of an organ (like the liver) describes what it does to keep the body alive.
But "function" isn't limited to science! It can also be used as a verb meaning "to operate" or "to work." For example: "The new security system is now functioning perfectly," or "She functions best under pressure." You might say someone functions as the leader of a group, even if that's not their official title.
In formal settings, "function" can also refer to a special event or social gathering—like a wedding reception or corporate function.
So, whether you're talking about what something is for, how it works, or an organized event—the word "function" always points back to purpose and operation.
Examples
- 1
Main purpose
The main function of the battery is to power the camera.
- 2
Job duty
In this job, her function is to check the final report before it goes out.
- 3
App features
The app has several useful functions, including offline maps.
- 4
Machine operation
The heating system is old, but it still functions well in winter.
More examplesFewer examples
- 5
Daily life
After three sleepless nights, he was barely able to function.
- 6
Room use
The spare bedroom now functions as a home office.
- Patternfunction as + role/use
serve as
- 7
Brain activity
Too little sleep can affect memory and other brain functions.
- 8
Math class
In math class, we learned how to graph a linear function.
- 9
Economics
In economics, demand is often described as a function of price.
- Patterna function of + factor
something that changes according to that factor
- 10
Official event
The embassy held a formal function for visiting diplomats.
- Phraseformal function
official social event
See also
Similar
Shades of meaning
Contrast
Used with (collocations)
- serve a function
- perform a function
- primary function
- biological function
Word family
Explore
- utility
- design intent
Forms and spellings
4 forms open this card.
Main spelling
- functionnounverb
Forms
- functionspluralnounverb
- functioning-ing formverbnoun
- functionedpast tenseverbnoun