pia mater

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Definitions from WordNet

Noun pia mater has 1 sense

pia mater - the highly vascular innermost of the 3 meninges
--₁ is a kind of meninx, meninges
--₁ is a part of leptomeninges

Definitions from the Web

Pia Mater

Noun: The delicate innermost membrane enveloping the brain and spinal cord.

Sample Sentence: The pia mater is responsible for protecting the central nervous system.

Noun: A popular term used in anatomy to refer to something being cherished or deeply valued.

Sample Sentence: Knowledge is considered the pia mater of a successful career.

Adjective: Describing someone or something as extremely cherished or beloved.

Sample Sentence: The town's pia mater festival draws thousands of visitors each year.