The Collaborative International Dictionary of English v.0.48:

malpighian layer \malpighian layer\ n. (Anatomy),
   The innermost layer of the epidermis.

   Syn: stratum germinativum, rete Malpighii.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

malpighian layer
    n 1: the innermost layer of the epidermis [syn: stratum
         germinativum, stratum basale, malpighian layer, rete
         Malpighii]