ductulus

English Thesaurus

1. a very small duct (noun.body)

hypernym	:	canal, channel, duct, epithelial duct,
definition	:	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance (noun.body)

hyponym	:	sweat duct,
definition	:	a small duct that conveys sweat from a sudoriferous gland to the surface of the skin (noun.body)

hyponym	:	biliary ductule,
definition	:	excretory ducts of the liver; empty into the hepatic ducts (noun.body)