Bible Dictionaries
Periderm

Webster's Dictionary

(1):

(n.) The outer layer of bark.

(2):

(n.) The hard outer covering of hydroids and other marine animals; the perisarc.

Bibliography Information
Webster, Noah. Entry for 'Periderm'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/periderm.html. 1828.