title: Piriform
text: # Piriform
  
  Piriform, sometimes pyriform, means pear-shaped (from Latin pirum "pear" and forma "shape").
  
  It may also refer to:
  
  ## Going pear-shaped
  
  * Going wrong or going pear-shaped
  
  ## Anatomy
  
  * Piriform aperture, more commonly known as anterior nasal aperture
  * Piriform cortex, a region in the brain
  * Piriformis muscle, a gluteal muscle
  * Piriformis syndrome, a neuromuscular disorder in which piriformis muscle compresses the sciatic nerve
  * Piriform sinus, piriform recess or piriform fossa, synonyms referring to one of the four sites of the hypopharynx
  * the pear female body shape
  
  ## Other uses
  
  * Piriform (company), a software company
  * Piriform, in hydrostatic equilibrium
  * Pyriform, a teapot shape introduced in the 18th century
  