optic(redirected from optic primordia)
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1. Of or relating to the eye or vision.
2. Of or relating to the science of optics or optical equipment.
1. An eye.
2. Any of the lenses, prisms, or mirrors of an optical instrument.
1. (Anatomy) of or relating to the eye or vision
2. (General Physics) a less common word for optical
an informal word for eye1
[C16: from Medieval Latin opticus, from Greek optikos, from optos visible, seen; related to ōps eye]
trademark Brit a device attached to an inverted bottle for dispensing measured quantities of liquid, such as whisky, gin, etc
1. of or pertaining to the eye or sight.n.
2. Usu. optics, the eye.
3. a lens of an optical instrument.
[1535–45; < Medieval Latin opticus < Greek optikós, derivative of opt(ós) seen, v. adj. of ópsesthai to see]
Relating to the eye or vision.
Relating to the eye.
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|Noun||1.||optic - the organ of sight |
sense organ, sensory receptor, receptor - an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation
visual system - the sensory system for vision
naked eye - the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects; "it is not safe to look directly at the sun with the naked eye"
peeper - an informal term referring to the eye
compound eye - in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an image
choroid, choroid coat - a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye
ciliary body - the part of the tunic of the eye between the choroid coat and the iris; "the ciliary body produces aqueous humor"
eyelid, lid, palpebra - either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer"
canthus - either of the corners of the eye where the upper and lower eyelids meet
epicanthic fold, epicanthus - a vertical fold of skin over the nasal canthus; normal for Mongolian peoples; sometimes occurs in Down's syndrome
nictitating membrane, third eyelid - a protective fold of skin in the eyes of reptiles and birds and some mammals
conjunctiva - a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid
cornea - the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
uvea - the part of the eye that contains the iris and ciliary body and choroid
uveoscleral pathway - a tubule that drains excess aqueous humor
iris - muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye
crystalline lens, lens of the eye, lens - biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
arteria centralis retinae, central artery of the retina - a branch of the ophthalmic artery; enters the eyeball with the optic nerve
arteria lacrimalis, lacrimal artery - an artery that originates from the ophthalmic artery and supplies the lacrimal gland and rectal eye muscles and the upper eyelid and the forehead
lacrimal vein, vena lacrimalis - drains the lacrimal gland; empties into the superior ophthalmic vein
lacrimal apparatus - the structures that secrete and drain tears from the eye
retina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
sclera, sclerotic coat - the whitish fibrous membrane (albuginea) that with the cornea forms the outer covering and protection of the eyeball
face, human face - the front of the human head from the forehead to the chin and ear to ear; "he washed his face"; "I wish I had seen the look on his face when he got the news"
colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
aperture - a natural opening in something
|Adj.||1.||optic - 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"|
|2.||optic - relating to or using sight; "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation"|