periderm

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noun

The outer layer of plant tissue comprising the phellem, phellogen and the phelloderm.

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Meanings

nounperiderm (countable and uncountable, plural periderms)

plural periderms · alternative periderma · alternative peridermis

  1. countableuncountablebiologyThe outer layer of plant tissue comprising the phellem, phellogen and the phelloderm.
  2. countableuncountablebiologyThe perisarc; the hard outer layer of hydroids and other marine animals.

Origin

From peri- + -derm.

Full word history & related roots →

Translations

Dutch periderm
  • peridermouter layer of plant tissue
Cite this entry
APA

periderm. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/periderm

MLA

“periderm.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/periderm. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “periderm,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/periderm.

Source: periderm on Wiktionary, CC BY-SA 4.0.