monocular

American  

[muh-nok-yuh-ler] / məˈnɒk yə lər /

adjective

1. having only one eye.

2. of, relating to, or for the use of only one eye.

   a monocular microscope.

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noun

1. a monocular instrument or device.

monocular British  

/ mɒˈnɒkjʊlə /

adjective

1. having to do with or using only one eye

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noun

1. a device for use with one eye, such as a field glass

Other Word Forms

• monocularly adverb

Etymology

Origin of monocular

1630–40; < Late Latin monocul ( us ) one-eyed ( monocle ) + -ar ¹

Example Sentences

From tech-forward grills and hand-forged carbon-steel roasters to a smart-home security system and a pocket-size monocular, each item was chosen for its mix of beauty, utility, and a little bit of wonder.

From Salon • Nov. 20, 2025

Though Duong feels the tumor shrinking and the size of his eye has receded, he still has monocular vision.

From Los Angeles Times • Apr. 15, 2025

Lynch, the study’s first author, is separately developing portable monocular technology for a device that could be used in physicians’ offices.

From Seattle Times • Aug. 25, 2022

In the early days, biologists used a night vision monocular attached to a VHS camera to capture the displays.

From Science Magazine • Aug. 24, 2022

Horses had monocular vision, which meant they looked at things separately with each eye, rather than together with both eyes like humans.

From "Two Degrees" by Alan Gratz