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op·tic 
Audio Help [op-tik] Pronunciation Key
Audio Help [op-tik] Pronunciation Key –adjective
–noun
| 1. | of or pertaining to the eye or sight. |
| 2. | optical. |
| 3. | the eye. |
| 4. | a lens of an optical instrument. |
[Origin: 1535–45; < ML opticus < Gk optikós, equiv. to opt(ós) seen (verbid of ópsesthai to see) + -ikos -ic]
] | Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
Optic
To learn more about Optic visit Britannica.com
| © 2008 Encyclopædia Britannica, Inc. |
| op·tic
Audio Help (ŏp'tĭk) Pronunciation Key
adj.
n.
[Middle English optik, from Old French optique, from Medieval Latin opticus, from Greek optikos, from optos, visible; see okw- in Indo-European roots.] |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
optic
1541, from M.Fr. optique, obtique (c.1300), from M.L. opticus "of sight or seeing," from Gk. optikos "of or having to do with sight," from optos "seen, visible," from op-, root of opsesthai "be going to see," related to ops "eye," from PIE *oqw- "eye/see" (see eye). Optics "science of sight and light" is from 1579; optician is first attested 1687, after Fr. opticien.
| Online Etymology Dictionary, © 2001 Douglas Harper |
| optic | |
adjective | |
| 1. | 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] |
| 2. | relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation" [syn: ocular] |
noun | |
| 1. | the organ of sight [syn: eye] |
| WordNet® 3.0, © 2006 by Princeton University. |
| optic
Audio Help (ŏp'tĭk) Pronunciation Key
Relating to or involving the eye or vision. |
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
Optic
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 lines meet; a corner; a nook. Into the utmost angle of the world. --Spenser. To search the tenderest angles of the heart. --Milton. 2. (Geom.) (a) The figure made by. two lines which meet. (b) The difference of direction of two lines. In the lines meet, the point of meeting is the vertex of the angle. 3. A projecting or sharp corner; an angular fragment. Though but an angle reached him of the stone. --Dryden. 4. (Astrol.) A name given to four of the twelve astrological "houses." [Obs.] --Chaucer. 5. [AS. angel.] A fishhook; tackle for catching fish, consisting of a line, hook, and bait, with or without a rod. Give me mine angle: we 'll to the river there. --Shak. A fisher next his trembling angle bears. --Pope. Acute angle, one less than a right angle, or less than 90[deg]. Adjacent or Contiguous angles, such as have one leg common to both angles. Alternate angles. See Alternate. Angle bar. (a) (Carp.) An upright bar at the angle where two faces of a polygonal or bay window meet. --Knight. (b) (Mach.) Same as Angle iron. Angle bead (Arch.), a bead worked on or fixed to the angle of any architectural work, esp. for protecting an angle of a wall. Angle brace, Angle tie (Carp.), a brace across an interior angle of a wooden frame, forming the hypothenuse and securing the two side pieces together. --Knight. Angle iron (Mach.), a rolled bar or plate of iron having one or more angles, used for forming the corners, or connecting or sustaining the sides of an iron structure to which it is riveted. Angle leaf (Arch.), a detail in the form of a leaf, more or less conventionalized, used to decorate and sometimes to strengthen an angle. Angle meter, an instrument for measuring angles, esp. for ascertaining the dip of strata. Angle shaft (Arch.), an enriched angle bead, often having a capital or base, or both. Curvilineal angle, one formed by two curved lines. External angles, angles formed by the sides of any right-lined figure, when the sides are produced or lengthened. Facial angle. See under Facial. Internal angles, those which are within any right-lined figure. Mixtilineal angle, one formed by a right line with a curved line. Oblique angle, one acute or obtuse, in opposition to a right angle. Obtuse angle, one greater than a right angle, or more than 90[deg]. Optic angle. See under Optic. Rectilineal or Right-lined angle, one formed by two right lines. Right angle, one formed by a right line falling on another perpendicularly, or an angle of 90[deg] (measured by a quarter circle). Solid angle, the figure formed by the meeting of three or more plane angles at one point. Spherical angle, one made by the meeting of two arcs of great circles, which mutually cut one another on the surface of a globe or sphere. Visual angle, the angle formed by two rays of light, or two straight lines drawn from the extreme points of an object to the center of the eye. For Angles of commutation, draught, incidence, reflection, refraction, position, repose, fraction, see Commutation, Draught, Incidence, Reflection, Refraction, etc.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
Optic
Au"top*sy\, n. [Gr. ?, fr. ? seen by one's self; ? self + ? seen: cf. F. autopsie. See Optic, a.]1. Personal observation or examination; seeing with one's own eyes; ocular view. By autopsy and experiment. --Cudworth. 2. (Med.) Dissection of a dead body, for the purpose of ascertaining the cause, seat, or nature of a disease; a post-mortem examination.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
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