Definitions

1. adjective

relating to or situated near the endoderm or the endodermal lining of an organ or cavity

“The subendymal layer of the brain plays a crucial role in the regulation of cerebrospinal fluid circulation.”

2. noun

a layer of cells situated near the endoderm or the endodermal lining of an organ or cavity

“The subendymal cells in the ventricular system are responsible for the secretion of cerebrospinal fluid.”