Optic angle

Optic angle
Optic Op"tic ([o^]p"t[i^]k), Optical Op"tic*al ([o^]p"t[i^]*kal), a. [F. optique, Gr. 'optiko`s; akin to 'o`psis sight, 'o`pwpa I have seen, 'o`psomai I shall see, and to 'o`sse the two eyes, 'o`ps face, L. oculus eye. See {Ocular}, {Eye}, and cf. {Canopy}, {Ophthalmia}.] 1. Of, pertaining to, or using vision or sight; as, optical illusions. [WordNet sense 2]

Syn: ocular, optic, visual. [1913 Webster + WordNet 1.5]

The moon, whose orb Through optic glass the Tuscan artist views. --Milton. [1913 Webster]

2. Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina; the optic (or optical) axis of the eye. See Illust. of {Brain}, and {Eye}. [WordNet sense 3] [1913 Webster]

3. Relating to the science of optics or to devices designed to assist vision; as, optical works; optical equipment. [WordNet sense 1] [1913 Webster +PJC]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Optic angle — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …   The Collaborative International Dictionary of English

  • optic angle — n 1) the angle formed by the optical axes of the two eyes when directed to the same point 2) VISUAL ANGLE * * * visual a …   Medical dictionary

  • optic angle — noun 1. a. : the angle formed by the optical axes of the two eyes when directed to the same point b. : visual angle 2. : the angle between the optic axes of a biaxial crystal …   Useful english dictionary

  • optic angle — noun the angle formed by lines from the extremities of an object to the eye, or from the eyes to a given point …   English new terms dictionary

  • Optic — Op tic ([o^]p t[i^]k), Optical Op tic*al ([o^]p t[i^]*kal), a. [F. optique, Gr. optiko s; akin to o psis sight, o pwpa I have seen, o psomai I shall see, and to o sse the two eyes, o ps face, L. oculus eye. See {Ocular}, {Eye}, and cf. {Canopy},… …   The Collaborative International Dictionary of English

  • Optic axis — Optic Op tic ([o^]p t[i^]k), Optical Op tic*al ([o^]p t[i^]*kal), a. [F. optique, Gr. optiko s; akin to o psis sight, o pwpa I have seen, o psomai I shall see, and to o sse the two eyes, o ps face, L. oculus eye. See {Ocular}, {Eye}, and cf.… …   The Collaborative International Dictionary of English

  • Angle — An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where two… …   The Collaborative International Dictionary of English

  • Angle bar — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …   The Collaborative International Dictionary of English

  • Angle bead — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …   The Collaborative International Dictionary of English

  • Angle brace — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …   The Collaborative International Dictionary of English

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