Submenu

A submenu is a term used to describe a menu that is contained within another menu. For example, in most programs, a submenu is often identified by having a small arrow pointing to the edge of the option as shown in the below illustration. Users who are using the keyboard to navigate a menu can access a submenu by pressing the right arrow key or collapse the submenu by pressing the left arrow key.

Submenu

Also see: Menu, Operating system terms