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Related to protoderm: ground meristem


n. Botany
The primary meristem that gives rise to epidermis. Also called dermatogen.

pro′to·derm′al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Botany) the layer of meristematic cells from which a plant's epidermis develops
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈproʊ təˌdɜrm)

a thin outer layer of the meristem in embryos and growing points of roots and stems, which gives rise to the epidermis. Also called dermatogen.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
3a-c) originates at the top the protoderm, while the zone of central mother cells originates basally the medullary meristem, and the lateral cells in this zone originate peripheral meristem (Fig.
The cotyledonary cleft is conspicuous and the protoderm is unstratified, formed by flattened cells of easily identifiable (Figure 4--viii).
(Paiva and Machado, 2006), the origin of this type of colleter involves the protoderm and the ground meristem.
The glandular trichomes are epidermal appendix originating in protoderm cells, whereas cells subjacent to tissues such as parenchyma or even vascular tissues also participate in the ontogeny of EFNs (ASCENSAO, 2007; EVERT, 2013).
This latter feature clearly highlighted an early differentiation of protoderm cell line in adventitious versus embryonic roots.