| dural | <anatomy> Pertaining to the dura, or dura mater. Source: Websters Dictionary (01 Mar 1998) |
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| dural sheath | An extension of the dura mater that ensheathes the roots of spinal nerves or, more particularly, the vagina externa nervi optici. (05 Mar 2000) |
| dural sheath of optic nerve | <anatomy, nerve> The outer sheath around the optic nerve, continuous with the dura mater. Synonym: vagina externa nervi optici, dural sheath of optic nerve. (05 Mar 2000) |
| dural venous sinuses | Endothelium-lined venous channels in the dura mater. Synonym: sinus durae matris, cerebral sinuses, cranial sinuses, sinuses of dura mater, venous sinuses. (05 Mar 2000) |
| duralumin | An alloy of aluminum slightly heavier than this metal but nearly as strong as steel and noncorrodible; used in the manufacture of surgical and orthopedic appliances, e.g., splints; not for internal use in the body as screws, plates. (05 Mar 2000) |