[ per-i-durm ]
/ ˈpɛr ɪˌdɜrm /


Botany. the cork-producing tissue of stems together with the cork layers and other tissues derived from it.
Embryology. epitrichium.

Origin of periderm

From the New Latin word peridermis, dating back to 1830–40. See peri-, -derm

Related forms

per·i·der·mal, per·i·der·mic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for periderm

British Dictionary definitions for periderm


/ (ˈpɛrɪˌdɜːm) /


the outer corky protective layer of woody stems and roots, consisting of cork cambium, phelloderm and cork

Derived Forms

peridermal or peridermic, adjective

Word Origin for periderm

C19: from New Latin peridermis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for periderm


[ pĕrĭ-dûrm′ ]


The outermost layer of the epidermis of an embryo or fetus up to the sixth month of gestation.epitrichium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for periderm


[ pĕrĭ-dûrm′ ]

The outer, protective layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it. See more at cork cambium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.