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Optical - Dictionary Definition and Overview |
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Optical : adj
1: relating to or using sight; "ocular inspection"; "an optical
illusion"; "visual powers"; "visual navigation" [syn:
ocular, optic, visual]
2: of or relating to or involving light or optics; "optical
supplies"
3: of or relating to or resembling the eye; "ocular muscles";
"an ocular organ"; "ocular diseases"; "the optic (or
optical) axis of the eye"; "an ocular spot is a pigmented
organ or part believed to be sensitive to light" [syn: ocular,
optic, opthalmic]
Based on WordNet 2.0
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Optic \Op"tic\,Optical : \Op"tic*al\, a. [F. optique, Gr. ?; akin
to ? sight, ? I have seen, ? I shall see, and to ? the two
eyes, ? face, L. oculus eye. See Ocular, Eye, and cf.
Canopy, Ophthalmia.]
1. Of or pertaining to vision or sight.
The moon, whose orb Through optic glass the Tuscan
artist views. --Milton.
2. Of or pertaining to the eye; ocular; as, the optic nerves
(the first pair of cranial nerves) which are distributed
to the retina. See Illust. of Brain, and Eye.
3. Relating to the science of optics; as, optical works.
Optic angle (Opt.), the angle included between the optic
axes of the two eyes when directed to the same point; --
sometimes called binocular parallax.
Optic axis. (Opt.)
(a) A line drawn through the center of the eye
perpendicular to its anterior and posterior surfaces.
In a normal eye it is in the direction of the optic
axis that objects are most distinctly seen.
(b) The line in a doubly refracting crystal, in the
direction of which no double refraction occurs. A
uniaxial crystal has one such line, a biaxial crystal
has two.
Optical circle (Opt.), a graduated circle used for the
measurement of angles in optical experiments.
Optical square, a surveyor's instrument with reflectors for
laying off right angles.
Based on WordNet (r) 2.0 (August 2003)
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