Definition from Wiktionary, the free dictionary
dropdown (not comparable)
- (computing, graphical user interface, of a widget) Dropping down from above; being a specific type of selection control that hides its contents until activated.
- Click the Colours button on the toolbar to show a dropdown menu of available colours.
dropdown (plural dropdowns)
- (computing, graphical user interface) An instance of a selection object that hides the contents (especially the other choices) until activated.
- That screen is good, but add a couple of dropdowns and it will be perfect.
computing: selection object — see dropdown list