sight(redirected from sight unseen)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms, Idioms, Wikipedia.
physiological sense of sight by which the form, color, size, movements, and distance of objects are perceived. Vision in Humans
The human eye functions somewhat like a camera; that is, it receives and focuses light upon a photosensitive receiver, the retina.
..... Click the link for more information. .
Mechanical or optical device for aiming a firearm or for laying a gun or launcher in position.
To aim at a target or aiming point.
1. the power or faculty of seeing; perception by the eyes; vision
2. any of various devices or instruments used to assist the eye in making alignments or directional observations, esp such a device used in aiming a gun
3. an observation or alignment made with such a device