ampulla(redirected from ampulla of rectum)
Also found in: Dictionary, Thesaurus, Medical.
1. Anatomy the dilated end part of certain ducts or canals, such as the end of a uterine tube
a. a vessel for containing the wine and water used at the Eucharist
b. a small flask for containing consecrated oil
3. a Roman two-handled bottle for oil, wine, or perfume
A dilated segment of a gland or tubule.
A small air bladder in some aquatic plants.
The sac at the base of a tube foot in certain echinoderms.