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| a series of paired nerves that originate in the spinal cord and emerge, branching out to the region of the neck, trunk, or limbs |
| the colored portion of the eye that contains a circular opening, the pupil, in its center |
| pia mater (ˈpaɪə ˈmeɪtə) | |
| —n | |
| See meninges the innermost of the three membranes (meninges) that cover the brain and spinal cord | |
| [C16: from Medieval Latin, literally: pious mother, intended to translate Arabic umm raqīqah tender mother] | |
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 (pī'ə mā'tər, pē'ə mä'tər) Pronunciation Key
The fine vascular membrane that closely envelops the brain and spinal cord under the arachnoid and the dura mater. |