Definition of "binocular" [bin•oc•u•lar]

• Relating to, used by, or involving both eyes at the same time: binocular vision. (adjective)
• Having two eyes arranged to produce stereoscopic vision. (adjective)
• An optical device, such as a pair of field glasses or opera glasses, designed for simultaneous use by both eyes and consisting of two small telescopes joined with a single focusing device. Often used in the plural. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Meaning it's a well made binocular from a company that established its name as a maker of binoculars."
• "The study consisted of two experiments designed around a visual phenomenon called "binocular rivalry," in which one image is shown to one eye and a different image is simultaneously displayed to the other eye."
• ""Each camera gets a slightly different view, and that creates what's called binocular disparity," says Ahna Girshick, a vision researcher at New York University."