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Definitions

aperture

[ap-er-cher] / ˈæp ər tʃər /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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One of Sentinel-3C's most important instruments, its synthetic aperture radar altimeter, is designed to measure the height of the ocean surface with high precision.

From Science Daily ● Oct. 12, 2026

For testing, I kept the aperture setting on Auto.

From The Wall Street Journal ● Sep. 19, 2026

They will come with an improved camera that allows users to adjust the lens aperture.

From Barron's ● Sep. 9, 2026

But there was, indeed, a brief aperture of time in the pressure cooker of 2020 when it all seemed possible.

From Slate ● Aug. 17, 2026

“There’s a new one here!” the woman called Frau Mikes called through the aperture.

From "The Hiding Place" by Corrie ten Boom

To open it up to the street, the architects chose the motif of “frames, apertures and doorways.”

From The Wall Street Journal ● Dec. 17, 2025

Fractions of a second count and he can change apertures and focuses with a flick of his finger without taking his eyes from his quarry.

From BBC ● Aug. 4, 2024

Dudley hopes to conduct further experiments, perhaps with a sequence of different apertures, to determine how birds navigate multiple obstacles.

From Science Daily ● Nov. 9, 2023

Compared to today’s smartphones, older digital cameras have fewer megapixels, which capture less detail, and built-in lenses with higher apertures, which let in less light, both of which contribute to lower-quality photos.

From New York Times ● Jan. 7, 2023

Other than this there were no openings or apertures through which light could seep.

From "Snow Falling on Cedars: A Novel" by David Guterson


Vocabulary lists containing aperture

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