01 n. The act of seeing external objects; actual sight.
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1.
The act of seeing external objects; actual sight.“Faith here is turned into vision there.” — Hammond.
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2.
The faculty of seeing; sight; one of the five senses, by which colors and the physical qualities of external objects are appreciated as a result of the stimulating action of light on the sensitive retina, an expansion of the optic nerve.(Physiol.)
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3.
That which is seen; an object of sight.
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4.
Especially, that which is seen otherwise than by the ordinary sight, or the rational eye; a supernatural, prophetic, or imaginary sight; an apparition; a phantom; a specter; as, the visions of Isaiah.“The baseless fabric of this vision.” — Shak.“No dreams, but visions strange.” — Sir P. Sidney.
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5.
Hence, something unreal or imaginary; a creation of fancy.
Phrases & compounds
Arc of vision —
the arc which measures the least distance from the sun at which, when the sun is below the horizon, a star or planet emerging from his rays becomes visible.
Beatific vision —
the immediate sight of God in heaven.
Direct vision —
vision when the image of the object falls directly on the yellow spot (see under Yellow); also, vision by means of rays which are not deviated from their original direction.
Field of vision —
field of view. See under Field.
Indirect vision —
vision when the rays of light from an object fall upon the peripheral parts of the retina.
Reflected vision —
vision by rays reflected from mirrors, or refracted by lenses or prisms, respectively.