periderm


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per·i·derm

, periderma (per'i-derm, -i-dĕr'mă),
The outermost layer of the epidermis of the embryo and fetus to the sixth month of intrauterine life; desquamated peridermal cells are a considerable component of the vernix caseosa.
Synonym(s): epitrichium
[peri- + G. derma, skin]

periderm

/peri·derm/ (per´ĭ-derm)
1. the outer layer of the bilaminar fetal epidermis, generally disappearing before birth.
2. the cuticle (eponychium and hyponychium), the only part of the periderm persisting after birth.periderm´al

periderm

[per′idurm]
the outermost layer of flattened epidermis on an embryo or fetus during the first 6 months of gestation.

periderm

A transiently expressed superficial layer that surrounds the developing epidermis.

per·i·derm

, periderma (per'i-dĕrm, -dĕr'mă)
The outermost layer of the epidermis of the embryo and fetus up to the sixth month of intrauterine life; desquamated epitrichial cells are a considerable component of the vernix caseosa.
Synonym(s): epitrichium.
[peri- + G. derma, skin]

periderm

a protective tissue formed in roots and stems that has undergone SECONDARY THICKENING, consisting of an outer cork zone, an underlying phellogen (cork cambium) and with a phelloderm (secondary cortex) beneath that.

periderm

the outer layer of the bilaminar fetal epidermis, generally disappearing before birth. Called also epitrichium.
References in periodicals archive ?
Beneath the cork in the periderm are the cork cambium, an area where cell division occurs, and the thin, green cork skin, found by gently scraping away the outer bark on a young twig.
Values for maximum crushing strength could not be obtained under the conditions employed since the spongy obliterated phloem tissues between the periderm tissues were so weak, and failed continuously, that an abrupt mechanical failure could not be recorded.
Irrigation scheduling is used to prepare for the first fall frost by imposing water stress on the vine to encourage periderm formation on green shoots.
Distribution of CA125 in embryonic tissues and adult derivatives of the fetal periderm.
Fruits of Coryphoideae tend to be globose and often have a corky periderm, unlike the ovoid, smooth skinned Tripylocarpa.
For example in this experiment sweet potato periderm tissue was applied to not only the kudzu plants but also to kudzu seeds to examine the suppressive effects of the allelochemicals.
Specifically, by grinding in a laboratory blender, we were able to generate a bark fraction rich in periderm tissue with its interlocking spiculate stone cells (sclereids).