periderm

American  

[per-i-durm] / ˈpɛr ɪˌdɜrm /

noun

1. Botany. the cork-producing tissue of stems together with the cork layers and other tissues derived from it.

2. Embryology. epitrichium.

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periderm British  

/ ˈpɛrɪˌdɜːm /

noun

1. the outer corky protective layer of woody stems and roots, consisting of cork cambium, phelloderm and cork

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periderm Scientific  

/ pĕr′ĭ-dûrm′ /

1. The outer, protective layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it.

2. See more at cork cambium

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Other Word Forms

• peridermal adjective
• peridermic adjective

Etymology

Origin of periderm

From the New Latin word peridermis, dating back to 1830–40. See peri-, -derm

Example Sentences

The cork cambium, cork cells, and phelloderm are collectively termed the periderm.

From Textbooks • Jun. 9, 2022

The periderm substitutes for the epidermis in mature plants.

From Textbooks • Jun. 9, 2022

Bark, properly the periderm, or outer covering, of woody stems and roots, composed of dead tissues cut off from the living parts of the organ by one or more layers of impervious cork.

From The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis by Various

Bark external to the first periderm layer, corresponding to the primary cortex.

From The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde by Various