the outer bark and the layer of soft, growing tissue between the bark and the wood in plants
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Derived forms peridermal (ˌperiˈdermal)
adjective or ˌperiˈdermic