protodermn.
/ˈprəʊtə(ʊ)dəːm/, U.S. /ˈproʊdəˌdərm/ Botany.
A layer of meristematic cells which divide to give rise to the epidermis. Cf. procambium n., ground-tissue n. at ground n. Compounds 2a.
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [noun]
protoderm1897
1897 Bot. Gaz. 23 474 Three distinct meristems, which Haberlandt names protoderm, procambium, and ground tissue.
1992 M. Ingrouille Diversity & Evol. Land Plants 47 Thus there is the protoderm giving rise to the epidermis, the procambium giving the primary vascular tissue, the ground meristem giving the cortex and pith, and promeristems giving rise to other meristems.
2004 Plant Jrnl. 39 298/1 In higher plants, the fundamental differentiation of tissues occurs early in embryogenesis, producing the protoderm, procambium and ground-tissues.
Derivatives
ˌprotoˈdermal adj.
ΚΠ
1898 Bot. Gaz. 26 11 During this change in the general form of the capsule the protodermal layer..divides by periclines into epidermal and hypodermal layers.
1960 K. Esau Anat. Seed Plants vii. 71 In the development of stomata in angiosperms, the mother cell, or the precursor, of the guard cells..commonly originates by an unequal division of a protodermal cell.
2004 Plant Jrnl. 39 298/1 The protoderm is a meristematic surface layer that consists of a single layer of protodermal cells.
This is a new entry (OED Third Edition, September 2007; most recently modified version published online March 2022).
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n.1897