Definify.com
Webster 1913 Edition
Optic
1.
The organ of sight; an eye.
The difference is as great between
The
The
optics
seeing, as the object seen. Pope.
2.
An eyeglass.
[Obs.]
Herbert.
The moon, whose orb
Through
Through
optic
glass the Tuscan artist views. Milton.
2.
Of or pertaining to the eye; ocular;
as, the
. See Illust. of optic
nerves (the first pair of cranial nerves) which are distributed to the retina; the optic (or optical
) axis of the eyeBrain
, and Eye
. [wns=3]
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.
Webster 1828 Edition
Optic
OP'TIC
,'TICAL,Adj.
1.
Relating or pertaining to vision or sight.2.
Relating to the science of optics.Optic angle, is that which the optic axes of the eyes make with one another, as they tend to meet at some distance before the eyes.
Optic axis, is the axis of the eye, or a line going through the middle of the pupil and the center of the eye.
Definition 2024
optic
optic
See also: òptic
English
Alternative forms
Adjective
optic (not comparable)
- Of, or relating to the eye or to vision.
- Milton
- The moon, whose orb / Through optic glass the Tuscan artist views.
- Milton
- Of, or relating to optics or optical instruments.
Translations
of or relating to the eye or to vision
of or relating to optics or optical instruments
Noun
optic (plural optics)
- (now humorous) An eye.
- Alexander Pope (1688-1744)
- The difference is as great between / The optics seeing, as the object seen.
- 1819, Lord Byron, Don Juan, I:
- how they, / Who saw those figures on the margin kiss all, / Could turn their optics to the text and pray, / Is more than I know […]
- 1907, Robert W[illiam] Chambers, “chapter VIII”, in The Younger Set (Project Gutenberg; EBook #14852), New York, N.Y.: A. L. Burt Company, published 1 February 2005 (Project Gutenberg version), OCLC 4241346:
- Elbows almost touching they leaned at ease, idly reading the almost obliterated lines engraved there. ¶ "I never understood it," she observed, lightly scornful. "What occult meaning has a sun-dial for the spooney? I'm sure I don't want to read riddles in a strange gentleman's optics."
- Alexander Pope (1688-1744)
- A lens or other part of an optical instrument that interacts with light.
- 2013 July-August, Fenella Saunders, “Tiny Lenses See the Big Picture”, in American Scientist:
- The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail.
-
- A measuring device with a small window, attached to an upside-down bottle, used to dispense alcoholic drinks in a bar.
Translations
a lens
a measuring device