A circumscribed dilation of any minute lymphatic or blood vessel or duct. ... Origin: Mod. L. Dim. Of L. Ampulla ... (05 Mar 2000) ... 
Type: Term Pronunciation: am-pul′ū-lă Definitions: 1. A circumscribed dilation of any minute lymphatic or blood vessel or duct.
ampullula 1. A small ampulla. 2. A circumscribed dilation of any minute lymphatic or blood vessel or duct. 3. Any minute ampulla, like many of those in minute blood, lymphatic, and lacteal vessels.
a small ampulla.