leptomeninges

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Related to piarachnoid: pia arachnoid
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Noun1.leptomeninges - the two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layers
meninges, meninx - a membrane (one of 3) that envelops the brain and spinal cord
arachnoid, arachnoid membrane - the middle of the 3 meninges
pia mater - the highly vascular innermost of the 3 meninges
Translations

lep·to·me·nin·ges

n. leptomeninges, las membranas más finas del cerebro; la piamadre y la aracnoide.