VISUALS
Noun
visuals
plural of visual
Source: Wiktionary
VISUAL
Vis"u*al, a. Etym: [L. visualis, from visus a seeing, sight: cf. F.
visuel. See Vision.]
1. Of or pertaining to sight; used in sight; serving as the
instrument of seeing; as, the visual nerve.
The air, Nowhere so clear, sharpened his visual ray. Milton.
2. That can be seen; visible. [R.] Visual angle. (Opt.) See under
Angle.
– Visual cone (Persp.), a cone whose vertex is at the point of
sight, or the eye.
– Visual plane, any plane passing through the point of sight.
– Visual point, the point at which the visual rays unite; the
position of the eye.
– Visual purple (Physiol.), a photochemical substance, of a
purplish red color, contained in the retina of human eyes and in the
eyes of most animals. It is quickly bleached by light, passing
through the colors, red, orange, and yellow, and then disappearing.
Also called rhodopsin, and vision purple. See Optography.
– Visual ray, a line from the eye, or point of sight.
– Visual white (Physiol.), the final product in the action of light
on visual purple. It is reconverted into visual purple by the
regenerating action of the choroidal epithelium.
– Visual yellow (Physiol.), a product intermediate between visual
purple and visual white, formed in the photochemical action of light
on visual purple.
Source: Webster’s Unabridged Dictionary 1913 Edition