'vena hemiazygos accessoria' definitions:

Definition of 'vena hemiazygos accessoria'

(from WordNet)
noun
A vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein [syn: accessory hemiazygos vein, accessory hemiazygous vein, vena hemiazygos accessoria]