Durableness

Power of lasting; continuance; permanence in one condition; durability; as, the dura blene of metal. Du'rably, adv. In a lasting manner; with long continuance or prolonged permanence. "His fame engraved durably in men's memories." - Sidney. Du'ra Ma'ter, n. [Lat., hard matter.] ( Anat .) The external and strongest membrane of the brain. The D. M. is a white, tough, fibrous membrane, that lines the whole internal cavity of the skull, and sends down folds or proce es which divide the brain into hemispheres, and part the brain proper from the cerebellum, or small brain, and at the same time form channels or sinuses for the venous blood returning from the organ, and which eventually terminate in the jugular veins. See BRAIN, and MENINGITIS.