Ependyma

Origin

From Ancient Greek ἐπένδυμα, "outer garment", from ἐπενδύειν, from ἐπί (epi, "over") + ἐν (en, "on") + δύειν (duein, "to put").

Noun

1. (anatomy) A thin epithelial membrane lining the ventricular system of the brain and the spinal cord