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  • optic
    optic
    adjective
    of or relating to the eye or sight.
  • Optic
    Optic
    noun
    a device attached to an inverted bottle for dispensing measured quantities of liquid, such as whisky, gin, etc
Synonyms

optic

American  
[op-tik] / ˈɒp tɪk /

adjective

  1. of or relating to the eye or sight.

  2. optical.


noun

  1. the eye.

  2. a lens of an optical instrument.

Optic 1 British  
/ ˈɒptɪk /

noun

  1. a device attached to an inverted bottle for dispensing measured quantities of liquid, such as whisky, gin, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

optic 2 British  
/ ˈɒptɪk /

adjective

  1. of or relating to the eye or vision

  2. a less common word for optical

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an informal word for eye 1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
optic Scientific  
/ ŏp′tĭk /
  1. Relating to or involving the eye or vision.


Other Word Forms


Etymology

Origin of optic

1535–45; < Medieval Latin opticus < Greek optikós, equivalent to opt ( ós ) seen (verbid of ópsesthai to see) + -ikos -ic


Explanation

If you describe something as optic, it has something to do with eyes or vision. Your optic nerve, for example, sends information to your brain from your eyes. You'll most often find the adjective optic in anatomy or biology textbooks, describing the parts of an eye, or disorders involving the eye. Your optic disc is a tiny blind spot that all humans have on their eyeballs, and optic neuritis is an inflammation of the optic nerve. When it's a noun, optic is an old-fashioned, jokey way to say "eyeball." Optic comes from the Greek optikos, "of or having to do with sight."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This occurs when blood supply to the front portion of the optic nerve becomes insufficient, potentially damaging the nerve and interfering with vision.

From Science Daily ● Oct. 15, 2026

Meanwhile, drones can now be built to use cellphone networks or fiber optic cables to evade the traditional jamming of radio frequencies used by police.

From The Wall Street Journal ● Oct. 8, 2026

The non-invasive technique uses reflected light to create high-resolution, cross-sectional images of biological tissues, particularly the retina and optic nerve, allowing doctors to detect and monitor disease.

From Barron's ● Oct. 5, 2026

There are several risk factors for NAION, including a chronic condition like Type 2 diabetes or high blood pressure, or being born with a small optic disc.

From MarketWatch ● Sep. 28, 2026

Her optic nerve is transmitting those signals to her visual cortex.

From "The Sun Is Also a Star" by Nicola Yoon

Optic fiber is not available off the shelf and likely had to be brought in from abroad, analysts and security officials said.

From The Wall Street Journal ● May 1, 2026

Searle lives with a rare eyesight condition called Autosomal Dominant Optic Atrophy - which affects vision by causing the optic nerve to become progressively thinner.

From BBC ● Jan. 2, 2026

Fiber Optic Solutions, which produces fiber optic gyroscopes and other equipment, was added in December for its contributions to the Russian military and/or defense industrial base.

From Reuters ● Jun. 12, 2023

Many in the industry are setting up educational programs to train people to work with the fiber, said Jim Hayes, the president of the Santa Monica, California-based Fiber Optic Association.

From Seattle Times ● Apr. 13, 2022

Struggling to remove an especially difficult cover, I wondered if the same Liberty paint was used on the campus, or if this "Optic White" was something made exclusively for the government.

From "Invisible Man" by Ralph Ellison

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