aperture

noun
ap·​er·​ture | \ ˈa-pər-ˌchu̇r How to pronounce aperture (audio) , ˈa-pə-, -chər, -ˌtyu̇r, -ˌtu̇r \

Definition of aperture

1 : an opening or open space : hole entered the cave through a narrow aperture
2a : 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

Synonyms for aperture

Synonyms

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Examples of aperture in a Sentence

We entered the cave through a narrow aperture. The photograph was taken using a fast shutter speed and a large aperture.
Recent Examples on the Web On the back, the Realme Pad X only has one camera — a 13-megapixel camera with an aperture of f/2.2. Christian De Looper, BGR, 5 Sep. 2022 After Hours character endures an extension of that briefly glimpsed metamorphosis, culminating in the monstrous reveal of a giant, red-jacketed man-toad bursting from an aperture in the wall. Chris Eggertsen, Billboard, 9 Sep. 2022 The new TrueDepth front-facing camera, meanwhile, has a faster f/1.9 aperture, plus, for the first time, autofocus. Samuel Axon And Scharon Harding, Ars Technica, 7 Sep. 2022 The widening of Hollywood’s aperture doesn’t just involve telling more female-focused tales. Brent Lang, Variety, 28 July 2022 Designed to be installed at the main shutoff valve of a home or business, the small, metal washer has a center aperture that measures just one-sixteenth of an inch in diameter. Los Angeles Times, 7 June 2022 The Pixel 6a features an 8MP lens with an f/2.0 aperture. PCMAG, 2 Aug. 2022 Outside of resolution, the Pixel 6 Pro's 26mm lens has an f/1.85 aperture. PCMAG, 2 Aug. 2022 The aperture is 15 feet from the condemned, situated in a corner of the room, according to a memo released last month by the prisons agency. Meg Kinnard, ajc, 23 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aperture.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of aperture

15th century, in the meaning defined at sense 1

History and Etymology for aperture

Middle English, borrowed from Latin apertūra, from apertus, past participle of aperīre "to open" + -ūra -ure — more at aperient

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Time Traveler for aperture

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The first known use of aperture was in the 15th century

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Dictionary Entries Near aperture

apertural canal

aperture

aperture card

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Statistics for aperture

Last Updated

27 Sep 2022

Cite this Entry

“Aperture.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aperture. Accessed 27 Sep. 2022.

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More Definitions for aperture

aperture

noun
ap·​er·​ture | \ ˈa-pər-ˌchu̇r How to pronounce aperture (audio) \

Kids Definition of aperture

: an opening or open space : hole

aperture

noun
ap·​er·​ture | \ ˈap-ə(r)-ˌchu̇(ə)r, -chər, -ˌt(y)u̇(ə)r How to pronounce aperture (audio) \

Medical Definition of aperture

1 : an opening or open space
2 : the diameter of the stop in an optical system that determines the diameter of the bundle of rays traversing the instrument

More from Merriam-Webster on aperture

Nglish: Translation of aperture for Spanish Speakers

Britannica English: Translation of aperture for Arabic Speakers

Britannica.com: Encyclopedia article about aperture

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