The quality of being selective, or extent to which something is selective. / The ability of a radio receiver to separate a desired signal frequency from others.

present participle of select

plural of selection

Capable of being selected

(graphical user interface) An item that can be selected by the user.

plural of selectability

The ability to be selected. / Worth; the appropriateness for being selected. / The ability to be selected from.

Of or pertaining to selection.

The state of being selective; discernment.

A button (of a joystick, joypad or similar device) that, when pressed, activates any of certain predefined functions that usually, but not always, involve selecting something out of a list of items.