[peri.derm] n [NL peridermis, fr. peri- + -dermis] (1849): an outer layer of tissue; esp: a cortical protective layer of many roots and stems that typically consists of phellem, phellogen, and phelloderm
PERIDERM
Meaning of PERIDERM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012