Ependyma

‖n. [ NL., fr. Gr. &unr_; an upper garment; 'epi` upon + &unr_; a garment; &unr_; in + &unr_; to put on. ] (Anat.) The epithelial lining of the ventricles of the brain and the canal of the spinal cord; endyma; ependymis. [ 1913 Webster ]