The dura-mater was healed but thickened, and some clot upon its surface was removed.
The dura-mater was lacerated and brain matter from the frontal lobe escaped freely.
"tough outer membrane surrounding the brain," c.1400, from Medieval Latin dura mater cerebri, literally "hard mother of the brain," a loan-translation of Arabic umm al-dimagh as-safiqa, literally "thick mother of the brain." "In Arabic, the words 'father,' 'mother,' and 'son' are often used to denote relationships between things" [Klein].
dura mater dura ma·ter (mā'tər, mä-)
The tough fibrous membrane covering the brain and the spinal cord and lining the inner surface of the skull. Also called dura , pachymeninx.