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binocular

[buh-nok-yuh-ler, bahy-] /bəˈnɒk yə lər, baɪ-/
noun
1.
Usually, binoculars. Also called pair of binoculars, prism binoculars. an optical device, providing good depth effect, for use with both eyes, consisting of two small telescopes fitted together side by side, each telescope having two prisms between the eyepiece and objective for erecting the image.
adjective
2.
involving both eyes:
binocular vision.
Origin of binocular
1705-1715
1705-15; bin- + ocular
Related forms
binocularity, noun
binocularly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for binoculars
Contemporary Examples
Historical Examples
  • Scotty, suppose you get the binoculars for Barby, then rig up a fan.

  • The American turned his binoculars obediently and scanned the west and north.

    The Cruise of the Dry Dock T. S. Stribling
  • Jack accordingly raised the binoculars and swept the northward section of the country.

    Boy Scouts Mysterious Signal G. Harvey Ralphson
  • In their places, suddenly, there were the thermos and the binoculars.

    The Hohokam Dig Theodore Pratt
  • De Hooch went over to the periscope and put his eyes to the binoculars.

    The Bramble Bush Gordon Randall Garrett
British Dictionary definitions for binoculars

binoculars

/bɪˈnɒkjʊləz; baɪ-/
plural noun
1.
an optical instrument for use with both eyes, consisting of two small telescopes joined together Also called field glasses

binocular

/bɪˈnɒkjʊlə; baɪ-/
adjective
1.
involving, relating to, seeing with or intended for both eyes: binocular vision
Word Origin
C18: from bi-1 + Latin oculus eye
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
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Word Origin and History for binoculars
n.

1866; see binocular. Earlier binocle (1690s).

binocular

adj.

1738, "involving both eyes," earlier "having two eyes" (1713), from French binoculaire, from Latin bini "two by two, twofold, two apiece" (see binary) + ocularis "of the eye," from oculus "eye" (see eye (n.)). The double-tubed telescopic instrument (1871, short for binocular glass) earlier was called a binocle. Related: Binocularity.

Online Etymology Dictionary, © 2010 Douglas Harper
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binoculars in Medicine

binocular bin·oc·u·lar (bə-nŏk'yə-lər, bī-)
adj.
Adapted to the use of both eyes. Used of an optical instrument.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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binoculars in Science
binocular
  (bə-nŏk'yə-lər)   

Adjective  Relating to or involving both eyes at once, as in binocular vision.

Noun  An optical device, such as a pair of field glasses, consisting of two small telescopes, designed for use by both eyes at once. Often used in the plural as binoculars.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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