dura mater: Meaning and Definition of

du'ra ma'ter

Pronunciation: (mā'tur), [key]
— Anat. Anat.
  1. the tough, fibrous membrane forming the outermost of the three coverings of the brain and spinal cord. Also calledCf. arachnoid (def. 6),
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.