pia mater

[pahy-uh mey-ter, pee-uh] /ˈpaɪ ə ˈmeɪ tər, ˈpi ə/
noun, Anatomy
1.
the delicate, fibrous, and highly vascular membrane forming the innermost of the three coverings of the brain and spinal cord.
Compare arachnoid (def 6), dura mater.
Origin
1350-1400; Middle English < Medieval Latin: literally, pious mother, erroneous translation of Arabic umm raqīqah tender mother
Examples from the web for pia mater
  • These are begot in the ventricle of memory, nourished in the womb of pia mater, and delivered upon the mellowing of occasion.
  • The outer layer is dura mater, the middle layer is arachnoid, and the innermost layer is pia mater.
British Dictionary definitions for pia mater

pia mater

/ˈpaɪə ˈmeɪtə/
noun
1.
the innermost of the three membranes (meninges) that cover the brain and spinal cord See meninges
Word Origin
C16: from Medieval Latin, literally: pious mother, intended to translate Arabic umm raqīqah tender mother
pia mater in Medicine

pia mater pia ma·ter (pī'ə mā'tər, pē'ə mä'tər)
n.
The fine vascular membrane that closely envelops the brain and spinal cord under the arachnoid and the dura mater.

pia mater in Science
pia mater
  (pī'ə mā'tər, pē'ə mä'tər)   
The fine vascular membrane that closely envelops the brain and spinal cord under the arachnoid and the dura mater.