bin·​oc·​u·​lar | \ bī-ˈnä-kyə-lər How to pronounce binocular (audio) , bə- \

Definition of binocular

 (Entry 1 of 2)

: of, relating to, using, or adapted to the use of both eyes


bin·​oc·​u·​lar | \ bə-ˈnä-kyə-lər How to pronounce binocular (audio) , bī- \

Definition of binocular (Entry 2 of 2)

1 : a binocular optical instrument
2 : a handheld optical instrument composed of two telescopes and a focusing device and usually having prisms to increase magnifying ability usually used in plural

Other Words from binocular


binocularity \ (ˌ)bī-​ˌnä-​kyə-​ˈler-​ə-​tē How to pronounce binocular (audio) , -​ˈla-​rə-​ , bə-​ \ noun
binocularly \ bī-​ˈnä-​kyə-​lər-​lē How to pronounce binocular (audio) , bə-​ \ adverb

Examples of binocular in a Sentence

Recent Examples on the Web: Adjective It can be seen on a clear night in the Southern Hemisphere without the use of a binocular or telescope, making it the first black hole to be seen without tools. Fox News, 8 May 2020 Magnification is the first number in a binocular description, such as 8x42. The Editors, Field & Stream, 8 Apr. 2020 Instead, Oculudentavis had eyes that bulged out to the sides and no binocular vision, the researchers found. Tom Metcalfe, NBC News, 11 Mar. 2020 The binocular’s best attribute, though, is its tack-sharp image, even in low-light conditions. Andrew Mckean, Outdoor Life, 21 Feb. 2020 Their eyes, meanwhile, have come to be situated in the narrow front of their face, affording them a more intensely focused, binocular vision — prying beaks and eyes coalescing to form the perfect foraging and nesting machine. New York Times, 11 Feb. 2020 Clutch bags and small purses — including camera and binocular cases — are permitted up to certain sizes. Brian Mccollum, Detroit Free Press, 19 Feb. 2020 Neural signature: Robertson’s team had shown in a 2013 study that autistic people perceive the images switching in a binocular rivalry task more slowly than neurotypical people do. Scientific American, 19 Aug. 2019 With help from a team of binocular-holding observers and three infrared sensors attached to the roof of a government shed on the Granite Canyon bluff, the counts are becoming more accurate. Anchorage Daily News, 25 Jan. 2020 Recent Examples on the Web: Noun The larger cats—tigers, lions and leopards—have circular pupils, because these provide good binocular vision for judging distances. Manasee Wagh, Popular Mechanics, 20 Apr. 2022 Here are a few traits to look for in a dedicated marine binocular. The Editors, Outdoor Life, 21 Oct. 2019 The distinctive binocular viewers available around the building were made by Tower Optical company. Cnn Editorial Research, CNN, 18 July 2021 His binocular vision improved, as did his depth perception, albeit slowly. Susan R. Barry, WSJ, 18 June 2021 The different types of prisms reflect the quality of binocular optics. Daisy Kelly,, 11 Apr. 2021 Some of the best glasses cleaner wipes on the market can be used for camera lenses, binocular lenses, and other sensitive optical surfaces, and the disposable format further ensures that users achieve the best results every time. Popsci Commerce Team, Popular Science, 8 Mar. 2021 Bike sales increased by 63 percent; paddle sports by 56 percent; golf sales by 51 percent; camping equipment by 31 percent; and binocular sales by 22 percent. Washington Post, 4 Mar. 2021 Other marine-binocular features might include a range finder or even stabilization technology, which makes higher-power glass (say above 7x magnification) more functional in the confines of a rocking boat. The Editors, Outdoor Life, 21 Oct. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'binocular.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of binocular


1679, in the meaning defined above


1861, in the meaning defined at sense 1

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Time Traveler for binocular

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The first known use of binocular was in 1679

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Dictionary Entries Near binocular



binocular rivalry

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Cite this Entry

“Binocular.” Dictionary, Merriam-Webster, Accessed 26 May. 2022.

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More Definitions for binocular


bin·​oc·​u·​lar | \ bī-ˈnä-kyə-lər How to pronounce binocular (audio) , bə- \

Kids Definition of binocular

: involving or designed for both eyes


bin·​oc·​u·​lar | \ bī-ˈnäk-yə-lər, bə- How to pronounce binocular (audio) \

Medical Definition of binocular

 (Entry 1 of 2)

: of, relating to, using, or adapted to the use of both eyes binocular vision a binocular microscope

Other Words from binocular

binocularly \ bī-​ˈnäk-​yə-​lər-​lē, bə-​ How to pronounce binocular (audio) \ adverb


bin·​oc·​u·​lar | \ bə-ˈnäk-yə-lər, bī- How to pronounce binocular (audio) \

Medical Definition of binocular (Entry 2 of 2)

: a binocular optical instrument

More from Merriam-Webster on binocular

Nglish: Translation of binocular for Spanish Speakers Encyclopedia article about binocular


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