the membrane lining the central cavities
of the brain and spinal cord
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'ependyma'ModL, arbitrary use (by Rudolf Virchow (1821-1902), Ger pathologist) of Gr ependyma, an upper garment < ependyein, to put on over < epi-, over + endyein < en-, on + dyein, dip into, put on < IE base *deu-, to sink into, penetrate