VENA

‖Ve″na (?), n.; pl. Venæ (#). [[L. See Vein.]] A vein. Vena cava; pl. Venæ cavæ. [] (Anat.) Any one of the great systemic veins connected directly with the heart.— Vena contracta. [] (Hydraulics) The contracted portion of a liquid jet at and near the orifice from which it issues. — Vena portæ; pl. VenÆ portæ. [] (Anat.) The portal vein of the liver. See under Portal.