1) Dermatogen 
(from the article `angiosperm`) ...concentric regions of primary meristematic tissues develop immediately behind the apical meristem (Figure 3). These primary meristems produce the ...
The undifferentiated cells of very young embryos, from which the primary germ layers will evolve. ... Origin: proto-+ G. Derma, skin ... (05 Mar 2000) ... 
Type: Term Pronunciation: prō′tō-derm Definitions: 1. The undifferentiated cells of very young embryos, from which the primordial germ layers will evolve.
a thin outer layer of the meristem in embryos and growing points of roots and stems, which gives rise to the epidermis. Also called