# periaqueductal gray

> English word · Noun

## Definitions
1. The region surrounding the cerebral aqueduct in the midbrain, playing an important role in analgesia.

## Etymology
Shortening of periaqueductal gray matter.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/periaqueductal-gray