ductility
- n the malleability of something that can be drawn into threads or wires or hammered into thin sheets
ductless gland
- n any of the glands of the endocrine system that secrete hormones directly into the bloodstream
ductus arteriosus
- n a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta; normally closes at birth