Meaning & Definition of word "Aperture"

Aperture

/ˈæp.ər.tʃər/

noun:

  • 1. An opening, hole, or gap, especially one that allows light to enter.
    • Example: The photographer adjusted the aperture of his camera to let in more light.
  • 2. The diameter of the entrance pupil of a camera lens, expressed in f-stops.
    • Example: A larger aperture creates a shallow depth of field, which is perfect for portrait photography.
  • 3. In optics, the opening through which light passes in an optical instrument.
    • Example: The telescope's aperture determines how much light can be collected for viewing distant stars.

Etymology

From Latin 'apertura', meaning 'opening, gap'.

Common Phrases and Expressions

wide aperture:

A setting on a camera lens that allows a lot of light to enter, used for artistic effects.

aperture priority:

A camera mode where the user sets the aperture and the camera adjusts the shutter speed.

aperture science:

A fictional research organization featured in the video game Portal.

Related Words

lens:

A transparent optical device that refracts light.

camera:

An instrument for capturing images.

focus:

The adjustment of a lens to make the image clear.

Slang Meanings of aperture

Meaning: A term used in photography circles to describe a setting that lets a lot of light in.

Example Sentence: When shooting in low light, make sure your aperture is wide open.

Meaning: Used metaphorically to describe any opportunity or opening that allows for progress.

Example Sentence: The new job offer was a great aperture for her career.