binocular

1 of 2

adjective

bin·​oc·​u·​lar bī-ˈnä-kyə-lər  bə- 

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

binocularity

(ˌ)bī-ˌnä-kyə-ˈler-ə-tē 

-ˈla-rə-, 

bə-

noun

binocularly

bī-ˈnä-kyə-lər-lē 

bə-

adverb

binocular

2 of 2

noun

bin·​oc·​u·​lar bə-ˈnä-kyə-lər  bī- 

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 plural

Examples of binocular in a Sentence

Recent Examples on the Web

Adjective

Called convergent binocular stereo (CBS), it is designed for robotic heads whose two cameras can point toward the same location instead of remaining parallel. — Jijo Malayil, Interesting Engineering, 27 Aug. 2026

Unlike the PongBot, which requires clip-on sensors to track you at the other end of the court, the S10 instead follows you with its binocular 4K vision. — New Atlas, 1 Aug. 2026

Noun

Check out our rankings of the best telescopes, binoculars, star projectors, cameras, drones, Lego, streaming and more. — Chris McMullen, Space.com, 5 Sep. 2026

The immodestly priced Krigler Lovely Patchouli 55 comes in a limited edition cross-body case made from vegan leather that feels a bit like what a Victorian explorer would use to carry his binoculars. — Chloe Schama, Vogue, 1 Sep. 2026

Word History

First Known Use

Adjective

1679, in the meaning defined above

Noun

1861, in the meaning defined at sense 1

Rhymes for binocular

• monocular
• postocular
• interocular
• multilocular
• unilocular
• jocular
• ocular

Kids Definition

binocular

1 of 2 adjective

bin·​oc·​u·​lar bī-ˈnäk-yə-lər 

bə-

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

binocular vision

binocular

2 of 2 noun

bin·​oc·​u·​lar bə-ˈnäk-yə-lər 

bī-

1

: a binocular optical instrument

2

: a handheld instrument for seeing at a distance that consists of two telescopes, a focusing device, and usually prisms

—usually used in plural

a pair of binoculars

Medical Definition

binocular

1 of 2 adjective

bin·​oc·​u·​lar bī-ˈnäk-yə-lər, bə- 

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

binocular vision

a binocular microscope

binocularly

bī-ˈnäk-yə-lər-lē, bə- 

adverb

binocular

2 of 2 noun

bin·​oc·​u·​lar bə-ˈnäk-yə-lər, bī- 

: a binocular optical instrument