周しゅう皮ひ

noun

periderm

Botanical term for the protective tissue that replaces the epidermis in secondary growth, consisting of cork, cork cambium, and phelloderm.

• 樹じゅ木もくの幹みきでは、周しゅう皮ひが形けい成せいされて表ひょう皮ひに代かわる。

  In tree trunks, the periderm forms and replaces the epidermis.