n.
The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.
[ENDO- + (EPI)DERMIS.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
