A minute vein continuous with a capillary

Wikipedia Word definitions in Wikipedia
A venule is a very small blood vessel in the microcirculation that allows blood to return from the capillary beds to drain into the larger blood vessels, the veins . Venules range from 7 to 50μm in diameter. Veins contain approximately 70% of total blood ...

Wiktionary Word definitions in Wiktionary
n. (context anatomy English) A small vein, especially one that connects capillary to a larger vein.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Venule \Ven"ule\, n. [L. venula, dim. from vena vein.] A small vein; a veinlet; specifically (Zo["o]l.), one of the small branches of the veins of the wings in insects.

WordNet Word definitions in WordNet
n. a minute vein continuous with a capillary [syn: venula , capillary vein ]

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"small vein," 1850, from Latin venula , diminutive of vena "vein" (see vein ).