: of or relating to the pia mater

Word History

First Known Use

1875, in the meaning defined above

Time Traveler
The first known use of pial was in 1875

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Cite this Entry

“Pial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pial. Accessed 29 Apr. 2025.

Medical Definition

: of or relating to the pia mater
a pial artery
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