pia matres

pia mater

[pahy-uh mey-ter, pee-uh]
noun Anatomy.
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

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World English Dictionary
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]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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