optical : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: optical	by the DICT Development Group
2 results for optical
From WordNet (r) 3.0 (2006) [wn]:
optical adj of or relating to or involving light or optics; "optical supplies" relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation" Synonym(s): ocular, optic, optical, visual 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" Synonym(s): ocular, optic, optical, opthalmic
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Optic \Op"tic\, Optical \Op"tical\, 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.