SINCE 1828
leptomeninges
noun plural
lep·to·me·nin·ges
| \ -mə-ˈnin-(ˌ)jēz
\
\
Medical Definition of leptomeninges
: the pia mater and the arachnoid considered together as investing the brain and spinal cord
— called also leptomeninx, pia-arachnoid
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