Main Entry: vi·sion

Pronunciation: \ˈvizh-ən\

Function: noun

1 : the act or power of seeing : sight
2 : the special sense by which the qualities of an object (as color, luminosity, shape, and size) constituting its appearance are perceived through a process in which light rays entering the eye are transformed by the retina into electrical signals that are transmitted to the brain via the optic nerve