VISUAL • E-FREE TRANSLATION.COM • Definition of Visual

Add this Dictionary
to your website!
See more options...

/vˈɪʒəwəl/ Listen

adjective

Visual adj.

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."

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.

See images of 'Visual'

Etymology of 'Visual'

Collaborative International Dictionary of English 0.48

Share |

"Visual" Quotes from Famous Books

... building up a certain part of the brain. For example, the man who has cultivated his hearing until he can hear sounds inaudible to ordinary men, has made for himself more brain-cells in the hearing area. If he has cultivated his sight assiduously, he has created more visual cells. If his touch has been cultivated, his brain has received new touch sensation-cells. And Professor Gates asserts that his mental ability has been thereby increased. You will be interested in hearing of his experiments with animals and what he ...

— What a Young Woman Ought to Know • Mary Wood-Allen

... instances of the habitual deceptions of sight and touch and hearing. I came upon these things in my reading, in the laboratory, with microscope or telescope, lived with them as constant difficulties. I will only instance one trifling case of visual deception in order to lead to my next question. One draws two ...

— First and Last Things • H. G. Wells

... in such a place that the visual ray did not strike the upper part of the man's body; and, despite the baron's efforts, he was unable to see the face of this friend—he judged him to be ...

— The Honor of the Name • Emile Gaboriau

... thirty thousand miles between us and the enemy was cut to ten thousand; to five. The ship was soon visible to the naked eye. Its visual movement, for all this time measurable only as a drift upon the amplified images of our instruments, now was obvious. We could see it plunging forward, could see that probably we would cross its bow. Within fifty miles? We hoped and guessed that would ...

— Wandl the Invader • Raymond King Cummings

... world, who convey to our organs of hearing, either by suggestion or actual presentation, the sensations of uncanny knocks, crashes, shrieks, etc.; and to our organs of sight, all kinds of uncanny, visual phenomena. ...

— Byways of Ghost-Land • Elliott O'Donnell

Copyright © 2025 e-Free Translation.com