noun / verb
function
FUNK-shuhn/ˈfʌŋkʃn/
The particular task something is designed to perform.
The key performs its function by turning the lock open.
Etymology
The pieces describe performing or discharging a task. From this idea of carrying out work, function names the proper work or purpose that something is meant to fulfill.
In context
… require a complete understanding of the physiological role of alpha synuclein so why it's been so hard to figure out the normal function of this protein …
More examples
- This button has two functions: saving and printing.
- The pump cannot function without a steady power supply.
- This function checks whether a password is long enough.
- The sofa also functions as a guest bed.
Forms
function · functions · functioned · functioning
functional adjective — able to perform its intended task
functionality noun — the useful capabilities something provides