aperture

Meanings

1. 1
   noun

   A small or narrow opening, gap, slit, or hole.

   An aperture in a wall.

2. 2
   noun

   The maximum angle between the two generatrices.

   If the generatrix makes an angle θ to the axis, then the aperture is 2θ.

3. 3
   noun

   an man-made opening

4. 4
   noun

   a device that controls amount of light admitted

From late Middle English, from Latin apertūra (“an opening”), from aperiō (“to uncover, make or lay bare”) + -tūra (“-ure”, action noun suffix). Doublet of overture and apertura.

Topics

External links

• Cambridge Dictionary
• Wiktionary
• Google Images