| azygos vein 
 
 one of a system of veins that drain the thoracic and abdominal walls;
 arises as a continuation of the right ascending lumbar vein and terminates in the superior vena cava
 • Syn:
 azygous vein, vena azygos
 • Hypernyms:
 vein, vena, venous blood vessel
 
 
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