noun, plural: venules
(anatomy) A small vein, the smallest of the venous blood vessel that connects the capillaries to the large, systemic vein.
(entomology) One of the small branches of a vein in the wing of an insect.
Venules, as a blood vessel, functions as a passageway for blood returning from the capillaries to the vein (back to the heart).
Word origin: Latin vēnula, diminutive of vēna, vein.
Related forms: venular (adjective)
Also called: veinule or veinulet