Definition of binocular in English:



  • Adapted for or using both eyes.

    ‘a binocular microscope’
    • ‘Watkins enlarged upon this binocular disparity by tweaking the lenses further apart than was normal to arrive at even more drastic perspectival jumps.’
    • ‘He was exempted from military service because of a detached retina, and later in his career, when binocular microscopes became the norm, people puzzled why he was happy to still use a monocular one.’
    • ‘When the plants flowered, buds of different developmental stages were removed from the main inflorescence and the petals were dissected from the flower bud under a binocular microscope.’
    • ‘These research microscopes often have binocular eyepieces, relying upon a series of prisms to split the image so that it may be viewed with both eyes.’
    • ‘Shallus could never have imagined that two centuries later conservators would peer through a binocular microscope to examine his pen strokes.’
    • ‘We calculated a mean of three measures for each size parameter that were done with a binocular microscope with x60 magnification.’
    • ‘I had an opportunity to use the new Leupold Wind River RB800 combination binocular and range finding optics for this trip.’
    • ‘All linear measurements were made in millimeters under a binocular microscope at magnifications from 10 to 50 times.’
    • ‘Anthers were dissected under a binocular microscope and pollen was gently squashed in staining solution under a coverslip.’
    • ‘Frequently, examination of a fracture face with a low-power binocular microscope can reveal the type and cause of failure.’
    • ‘The residues were dried and we used the 20-125 m fraction to pick specimens under a binocular microscope.’
    • ‘Method and apparatus for determining binocular affine disparity and affine invariant distance between two image patterns’
    • ‘The epidermis was spread out on a glass plate beneath a low-power binocular microscope and cut into pieces of the required size using a combination of razor and scalpel blades.’
    • ‘The shift from the field-glass, or binocular telescope, to the magic lantern, announces a redefinition of the realist project.’
    • ‘Watching a person come straight toward you up a rope produces a weird binocular effect, like she's tunneling at you through thin air.’
    • ‘This would be the bird remains, after cleaning the feathers in Xylene and mounting the fragments on a microscope slide, using my Nikon binocular microscope, I could tell what the bird was.’
    • ‘The monocular produced a very bright, clear image, however, and we assume the binocular model of the same power, which does have eyecups, would too.’
    • ‘The researchers measured the binocular visual field of healthy volunteers while they were wearing four different styles of anorak.’
    • ‘Jared adjusted the binocular settings and zoomed in.’
    • ‘Mineral concentrates were obtained by conventional mineral separation techniques and finally hand-picked under a binocular microscope.’


Early 18th century (in the sense having two eyes): from Latin bini two together + oculus eye on the pattern of ocular.