Either of the two large veins that take oxygen depleted blood, from the upper body and from the lower body, and return it to the right atrium of the heart
{i} (Medicine) either of two main veins that carry blood to the right atrium of the heart; superior vena cava or the inferior vena cava
Either of two major veins that deliver oxygen-depleted blood to the right side of the heart. The superior vena cava drains the upper body, and the inferior vena cava drains the lower body. See also cardiovascular system, circulation
either of two large veins that return oxygen-depleted blood to the right atrium of the heart