Definition of "veins" []

• Plural form of vein. (noun)

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• "These capillaries in turn empty into a single system of veins which, uniting to form the _hepatic veins_"
• "What Erasistratus made out was that, at the roots of the aorta and the pulmonary artery (Fig. 1) there were valves, which opened in the direction indicated by the arrows; and, on the other hand, that at the junction of what he called the veins with the heart there were other valves, which also opened again in the direction indicated by the arrows."
• "What Erasistratus made out was that, at the roots of the aorta and the pulmonary artery (Figure 1) there were valves, which opened in the direction indicated by the arrows; and, on the other hand, that at the junction of what he called the veins with the heart there were other valves, which also opened again in the direction indicated by the arrows."