epidural
epidural Outside of the dura mater, the outermost and most fibrous of the three membranes (dura mater, arachnoid membrane, and pia mater) covering the brain and the spinal cord. See also epidural anesthetic.
epidural Outside of the dura mater, the outermost and most fibrous of the three membranes (dura mater, arachnoid membrane, and pia mater) covering the brain and the spinal cord. See also epidural anesthetic.