pia materpia ma·ter
the vascular membrane immediately enveloping the brain and spinal cord and surrounded by the arachnoid and dura mater
Origin of pia materMiddle English from Medieval Latin (lit., gentle mother from feminine of Classical Latin pius, tender, pious + mater, mother): used as translated, translation of Arabic al ?ummal raq?qa
The fine vascular membrane that closely envelops the brain and spinal cord under the arachnoid and the dura mater.
Origin of pia materMiddle English from Medieval Latin pia māter Latin pia tender Latin māter mother ( translation of Arabic 'umm raqīqa ) ( 'umm mother ) ( raqīqa tender )