leptomeninges
noun plural
lep·to·me·nin·ges
-mə-ˈnin-(ˌ)jēz 
: the pia mater and the arachnoid considered together as investing the brain and spinal cord
called also leptomeninx, pia-arachnoid
Cite this Entry
“Leptomeninges.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/leptomeninges. Accessed 11 Jul. 2025.
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