Piriform

Piriform, sometimes spelled pyriform, means pear-shaped (from Latin pirum "pear" and forma "shape") or flame-shaped (from Greek πῦρ "fire").

Piriform may refer to:

• Piriform (company), a software company
• Piriform, in hydrostatic equilibrium

In 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