title: Aperture (disambiguation)
text: # Aperture (disambiguation)
  
  The aperture of an optical system is the opening that limits the amount of light that can pass through.
  
  Aperture may also refer to:
  
  ## Science and technology
  
  * In anatomy, a number of apertures in the human body:
     * Apertura nasalis posterior
     * Apertura pelvis inferior
     * Apertura pelvis minoris
     * Apertura pelvis superior
     * Apertura thoracis inferior
     * Apertura thoracis superior
     * Lateral aperture (foramen of Luschka), an opening in each lateral extremity of the lateral recess of the fourth ventricle of the human brain
     * Median aperture (foramen of Magendie), which drains cerebrospinal fluid (CSF) from the fourth ventricle into the cisterna magna
  * Antenna aperture, a physical parameter of an antenna
  * Aperture (mollusc), the main opening in the shell of a gastropod or scaphopod (mollusc)
  * Aperture (botany), a weaker spot in the wall of a pollen grain
  * Numerical aperture is a parameter used to describe optical systems
  * Aperture (computer memory), a region of the physical address space that opens access to a particular device or memory unit
  * Aperture (software), an image organization and editing program for photographers, sold by Apple Inc.
  
  ## Other uses
  
  * Aperture (magazine), a long-running art photography magazine
  * "Aperture" (song), a song by Emily Blue
  * Aperture (typography), an enclosed loop in a typographical symbol, such as the lower part of the letter 'a'
  * Aperture Foundation, a photography nonprofit
  * Aperture Science, a fictional organization featured in the Portal video game series
  