aperture

[ ap-er-cher ]

/ ˈæp ər tʃər /

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See synonyms for aperture on Thesaurus.com

noun

an opening, as a hole, slit, crack, gap, etc.

Also called aperture stop .Optics. an opening, usually circular, that limits the quantity of light that can enter an optical instrument.

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Origin of aperture

1400–50; late Middle English <Latin apertūra an opening, equivalent to apert(us) opened (past participle of aperīre; aper(i)- (see aperient) + -tus past participle suffix) + -ūra-ure

OTHER WORDS FROM aperture

ap·er·tur·al

[ap-er-choor-uhl], /ˈæp ərˌtʃʊər əl/, adjectiveap·er·tured, adjective

Words nearby aperture

aperitive, Apert-Crouzon syndrome, apertognathia, apertometer, Apert's syndrome, aperture, aperture card, aperture-priority, aperture synthesis, apery, apeshit

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use aperture in a sentence

That fast aperture combined with a 9-blade aperture should create some extremely smooth blur effects in out-of-focus areas.
Fujifilm’s new 102-megapixel camera is the size of a typical DSLR|Stan Horaczek|January 30, 2021|Popular-Science
Another is as an opening or aperture in an object, like a tunnel through a mountain or the punches in three-ring binder paper.
Topology 101: The Hole Truth|David S. Richeson|January 26, 2021|Quanta Magazine
It has become undeniable that leaders must open the aperture when it comes to stakeholders, and irrefutable that they must strive for positive impact with customers, employees, partners, and the community writ large.
The challenges of 2020 are making corporate boards stronger and better|matthewheimer|December 29, 2020|Fortune
The small aperture is a downside in some situations, but if you’re out in the field shooting sports or nature at midday, you’ll probably never miss the extra speed.
The best new photography gear of the year|Stan Horaczek|December 26, 2020|Popular-Science

It essentially boils down to your aperture, the focal length of your lens, and your distance from the subject.
Planning to buy an iPhone 12 Pro Max? You may want to brush up on your photography skills.|Stan Horaczek|October 14, 2020|Popular-Science
Its 8-megapixel camera, inclusive of true-tone and dual-LED f/2.2 aperture flashes, features optical image stabilization.
Why Every Home Needs a Drone This Holiday|Charlie Gilbert|December 8, 2014|DAILY BEAST
“Administration officials favorite phrase these days is that, ‘you have to widen the aperture,’” says Bockenfeld.
Obama To Cut Middle East Democracy Programs|Jamie Dettmer|January 2, 2014|DAILY BEAST
If the cover of Black Aperture made a more daring use of black it would have earned my respect.
You Can Indeed Judge a Book By Its Cover|Brian Gresko|November 20, 2013|DAILY BEAST
His book of essays, Photography After Frank , was recently published by Aperture.
Hai Bo and China's Photography Boom|Philip Gefter|January 20, 2011|DAILY BEAST
His book of essays, Photography After Frank, was recently published by Aperture.
Pulp Fictions|Philip Gefter|September 10, 2009|DAILY BEAST
In the aperture of the window, amid piles of paper, stood a rickety old table, covered with dust.
Hilda Lessways|Arnold Bennett
Hilda suggested that the ticket-clerk should be interrogated, but the aperture of communication with him was shut.
Hilda Lessways|Arnold Bennett
The light which discovered its dismal bounds to his solitary eyes, came from a small grated aperture in the vaulted roof.
The Pastor's Fire-side Vol. 3 of 4|Jane Porter
Indeed it could hardly have seemed possible to him, that the Duke could have withdrawn himself through that aperture.
The Pastor's Fire-side Vol. 3 of 4|Jane Porter
A hearty roar of laughter burst from the doorway as the Factor's burly figure blocked the aperture.
Menotah|Ernest G. Henham

British Dictionary definitions for aperture

aperture

/ (ˈæpətʃə) /

noun

a hole, gap, crack, slit, or other opening

physics

a usually circular and often variable opening in an optical instrument or device that controls the quantity of radiation entering or leaving it
the diameter of such an openingSee also relative aperture

Word Origin for aperture

C15: from Late Latin apertūra opening, from Latin aperīre to open

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for aperture

aperture

[ ăp′ər-chər ]

An opening, such as a hole, gap, or slit.

A usually adjustable opening in an optical instrument, such as a microscope, a camera, or a telescope, that limits the amount of light passing through a lens or onto a mirror.

The diameter of such an opening.

The diameter of the objective of a telescope or microscope.

Other words from aperture

ap′er•tur′al adj.

aperture

Origin of aperture

OTHER WORDS FROM aperture

Words nearby aperture

Words related to aperture

How to use aperture in a sentence

British Dictionary definitions for aperture

Word Origin for aperture

Medical definitions for aperture

Other words from aperture