noun The purpose something serves or the job it does.
- The main function of a bridge is to carry traffic across a river.
- The function of a thermostat is to regulate temperature.
- What's the function of this button?
noun A formal or official event.
- Guests dressed smartly for the charity function held at the town hall.
- He was invited to a formal function at the embassy last night.
- They met at a company function last spring.
noun In maths and programming, a rule or routine that turns an input into an output.
- In this program, the function doubles every number you give it.
- Our maths teacher asked us to graph a simple function on squared paper.
- The function takes two numbers and returns their sum.
verb To work or operate as intended.
- The heating didn't function properly until the engineer fixed the valve.
- Few people can function well without a good night's sleep.
- The old printer still functions, surprisingly.
