aperture
noun
ap·er·ture
ˈa-pər-ˌchu̇r 
ˈa-pə-,
-chər,
-ˌtyu̇r,
-ˌtu̇r
1
: an opening or open space : hole
entered the cave through a narrow aperture
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
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
The phone comes equipped with a 48MP main camera with an aperture of f/1.7, optical image stabilization (OIS), and an 82-degree field of view.
—
PCMAG, 14 Aug. 2024
The new camera aperture feature would allow users to achieve a real bokeh effect in their photos instead of relying on machine learning, which can sometimes make mistakes in faking it.
—Samuel Axon, Ars Technica, 24 July 2024
The aperture then expands to include Coogie's older brother Brandon (Jason Mitchell), a cook at a bougie West Loop restaurant, who has to cope with his brother's death.
—David Faris, theweek, 18 July 2024
Between the aperture at six o’clock featuring a sliding carousel of seven emojis, the yellow squiggly seconds hand and the nostalgic color scheme, the piece is an instant classic.
—Victoria Gomelsky, Robb Report, 17 July 2024
See all Example Sentences for aperture 
PCMAG, 14 Aug. 2024
The new camera aperture feature would allow users to achieve a real bokeh effect in their photos instead of relying on machine learning, which can sometimes make mistakes in faking it.
—Samuel Axon, Ars Technica, 24 July 2024
The aperture then expands to include Coogie's older brother Brandon (Jason Mitchell), a cook at a bougie West Loop restaurant, who has to cope with his brother's death.
—David Faris, theweek, 18 July 2024
Between the aperture at six o’clock featuring a sliding carousel of seven emojis, the yellow squiggly seconds hand and the nostalgic color scheme, the piece is an instant classic.
—Victoria Gomelsky, Robb Report, 17 July 2024
See all Example Sentences for aperture
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'aperture.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near aperture
Cite this Entry
“Aperture.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aperture. Accessed 19 Aug. 2024.
Copy CitationKids Definition
aperture
noun
ap·er·ture
ˈap-ə(r)-ˌchu̇(ə)r
-chər
1
: an opening or open space : hole
2
a
: the opening in a camera lens that allows light through
b
: the diameter of the opening in a camera lens
Medical Definition
aperture
noun
ap·er·ture
ˈap-ə(r)-ˌchu̇(ə)r, -chər, -ˌt(y)u̇(ə)r
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
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