accessory hemiazygos vein

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a vein formed by the union of the 4th to 7th posterior intercostal veins;
empties into the azygos vein
• Syn:
accessory hemiazygous vein, vena hemiazygos accessoria
• Hypernyms:
vein, vena, venous blood vessel