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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.

The latest version, made by ASML, performs high numerical aperture extreme ultraviolet lithography.

From The Wall Street Journal • Nov. 3, 2025

A hermit crab will inspect a shell with care, running antennae and claws over its contours, before delicately lowering its rear end into the aperture.

From Slate • Aug. 19, 2025

"I learned how to shoot at night, adjust shutter speed and aperture," said Keerthi, who lives in the Tenkasi district.

From BBC • Mar. 14, 2025

When Elwood meets Turner, Ross begins to switch between their vantage points, widening the film’s emotional aperture in the process.

From Salon • Dec. 13, 2024

“We need a mechanism for sealing off the upper aperture too,” Quentin said.

From "October Sky" by Homer Hickam