binocular
pronunciation
How to pronounce binocular in British English:
UK [ bɪˈnɒkjələ(r)]
How to pronounce binocular in American English:
US [ bɪˈnɑːkjələr]
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- Noun:
- an optical instrument designed for simultaneous use by both eyes
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- Adjective:
- relating to both eyes
Word Origin
- 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.
Example
- 1. These cells , called binocular neurons , are thought to be the key to seeing in three dimensions .
- 2. That 's when the two brightest planets in our own solar system , venus and jupiter , will almost unite . Uranus and neptune will be shining green but will need a good binocular to be seen .
- 3. I have two devices to me solve mysteries like that : a camera with a macro lens , and a pair of surgeon 's glasses , which are heavy metal frames with little binocular telescopes mounted on them .
- 4. Then , the researchers employed a technique that exploits what 's known as " binocular rivalry " to study how gossip affects vision .
- 5. Given the overwhelming evidence for a critical period in visual development , most experts assume that sue and bridgeman , by extension had at least one moment of binocular vision while young , an experience that primed them for full stereovision later in life by initiating the necessary neuronal growth .