#anatomical ampulla
- Ampoule — A small, hermetically sealed, sterile glass or plastic vessel with a rounded body and a narrow neck, used in pharmacy for preserving liquid medications intended for injection; in physics and engineering, an airtight glass container holding a rarefied gas or a metallic filament (a thermometer bulb or light bulb). In anatomy, the term describes a sac-like structural dilation of a biological duct or organ.