noun
aperture
AP-uh-chuh
noun
1
A small opening, gap, or hole, especially one that lets light or something else pass through.
"Light streamed through a narrow aperture in the cave wall."
"Adjust the camera's aperture to control how much light hits the sensor."
How to Use Aperture
Learner’s notesIn plain EnglishA gap or opening — in everyday use often the adjustable hole in a camera lens that lets light in.
Common pairings
wide aperture
narrow aperture
aperture setting
Word Forms
apertures plural
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Light streamed through a narrow _____ in the cave wall.
Etymology
From Latin apertura, "an opening," from aperire, "to uncover or lay bare."