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What does the eggplant emoji really mean?


[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
peridermal, peridermic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for periderm


the outer corky protective layer of woody stems and roots, consisting of cork cambium, phelloderm and cork
Derived Forms
peridermal, peridermic, adjective
Word Origin
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
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periderm in Medicine

periderm per·i·derm (pěr'ĭ-dûrm') or per·i·der·ma (pěr'ĭ-dûr'mə)
The outermost layer of the epidermis of an embryo or a fetus up to the sixth month of gestation. Also called epitrichium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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periderm in Science
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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