n. The act of seeing external objects; sight.n. The faculty that perceives the luminosity, color, form, and relative size of objects; that sense whose organ is the eye; by extension, an analogous mental power. As noting one of the five special senses of the body, vision is correlated with olfaction, audition, gustation, and taction. See sight.n. That which is seen; an object of sight; specifically, a supernatural or prophetic appearance; something seen in a dream, ecstasy, trance, or the like; also, an imaginary appearance; an apparition; a phantom.n. Anything unreal or imaginary; a mere creation of fancy; a fanciful view.To see as in a vision; perceive by the eye of the intellect or imagination.To present in or as in a vision.