Piriform
# 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
