Definitions

1. noun

A layer of parenchyma in the bark of certain trees, between the phellem and the phloem.

“The phelloderm plays a crucial role in the tree’s defense system.”

2. noun

In the context of embryology, a layer of cells forming the inner layer of an apical meristem.

“The phelloderm of the plant embryo was found to be responsible for its rapid growth.”