Meaning & use

aperture

noun·Academic

An opening, especially one that controls the amount of light entering a camera or optical device.

See it in a sentence

Widening the aperture let more light into the lens for the dim evening shot.

Light streamed through a narrow aperture cut into the ancient stone wall.

A note on using this word

In photography, a smaller aperture number actually means a wider opening, which can confuse beginners.

Words with a similar meaning

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