iliac vein

noun

Medical Definition of iliac vein

: any of several veins on each side of the body corresponding to and accompanying the iliac arteries:
a : either of two veins of which one is formed on each side of the body by the union of the external and internal iliac veins and which unite to form the inferior vena cava

called also common iliac vein

b : a vein that drains the leg and lower part of the anterior abdominal wall, is an upward continuation of the femoral vein, and unites with the internal iliac vein

called also external iliac vein

c : a vein that drains the pelvis and gluteal and perineal regions, accompanies the internal iliac artery, and unites with the external iliac vein to form the common iliac vein

called also hypogastric vein, internal iliac vein

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