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Optic   /ˈɑptɪk/   Listen
noun
Optic  n.  
1.
The organ of sight; an eye. "The difference is as great between The optics seeing, as the object seen."
2.
An eyeglass. (Obs.)



adjective
Optical, Optic  adj.  
1.
Of, pertaining to, or using vision or sight; as, optical illusions.
Synonyms: ocular, optic, visual. "The moon, whose orb Through optic glass the Tuscan artist views."
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.
3.
Relating to the science of optics or to devices designed to assist vision; as, optical works; optical equipment.
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.






Collaborative International Dictionary of English 0.48








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"Optic" Quotes from Famous Books



... this position: we do not see with our outward eye any more than we do with spectacles. The apparent ocular apparatus is but the passive, unconscious instrument to transmit images thrown through it upon a fine interior fibre, the optic nerve; and even this does not take cognizance of the object, but is only another conductor, carrying the image still farther inward, to the intellectual nerves of the brain; and not until it reaches them do we see the object, not until then is ...
— Essays AEsthetical • George Calvert

... rather live here, Peggy. Last night I fell to thinking of that old garret, and hanged if something didn't come up and stick in my throat so tight that I wanted to cry. How long has it been since we played up there? Yes, and how long has it been since I read 'Oliver Optic' to you, lying there in the garret window while you sat with your back against the wall, your blue eyes as ...
— Brewster's Millions • George Barr McCutcheon

... and years past he had realized that his optic nerves, punished and preyed upon by constant and unwholesome brilliancy, were nearing the point of collapse, and that all the other nerves in his body, frayed and fretted, too, were all askew and jangled. Cognizant of this he still could see no hope of relief, ...
— The Best Short Stories of 1921 and the Yearbook of the American Short Story • Various

... range, from a clump of bushes by the wayside, and the charge had taken effect in the side of the face. The sight of one eye was destroyed beyond a peradventure, and that of the other endangered by a possible injury to the optic nerve. A sedative was administered, as many as possible of the shot extracted, and the wounds dressed. Meantime a messenger was despatched to Sycamore for Fetters, senior, who came before morning post-haste. To his anxious inquiries the doctor ...
— The Colonel's Dream • Charles W. Chesnutt

... editorial on the Big Bluff Extension to the hands of the Honorable Abner Dean, Assemblyman from Angel's. The loss of the Honorable Mr. Dean's right eye in an early pioneer fracas did not prevent him from looking into the dim vista of the future and discovering with that single unaided optic enough to fill three columns of the "Star." "It is not too extravagant to say," he remarked with charming deprecation, "that Indian Spring, through its own perfectly organized system of inland transportation, the confluence of its North Fork with the Sacramento ...
— Cressy • Bret Harte


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