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aperture

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noun ap·er·ture \ˈap-ə(r)-ˌchu̇r, -chər, -ˌtyu̇r, -ˌtu̇r\

Simple Definition of aperture

  • : a hole or small opening in something

  • : an opening that controls the amount of light that passes through a lens (such as a camera lens)

Source: Merriam-Webster's Learner's Dictionary

Full Definition of aperture

  1. 1 :  an opening or open space :  hole

  2. 2 a :  the opening in a photographic lens that admits the light b :  the diameter of the stop in an optical system that determines the diameter of the bundle of rays traversing the instrument c :  the diameter of the objective lens or mirror of a telescope

Examples of aperture in a sentence

  1. We entered the cave through a narrow aperture.

  2. The photograph was taken using a fast shutter speed and a large aperture.



Origin and Etymology of aperture

Middle English, from Latin apertura, from apertus, past participle of aperire to open


First Known Use: 15th century

Other Pictures (on film) Terms


APERTURE Defined for Kids

aperture

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noun ap·er·ture \ˈa-pər-ˌchu̇r\

Definition of aperture for Students

  1. :  an opening or open space :  hole




Medical Dictionary

aperture

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noun ap·er·ture \ˈap-ə(r)-ˌchu̇(ə)r, -chər, -ˌt(y)u̇(ə)r\

Medical Definition of aperture

  1. 1:  an opening or open space

  2. 2:  the diameter of the stop in an optical system that determines the diameter of the bundle of rays traversing the instrument





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