epidermis

[ep-i-dur-mis]
noun
1.
Anatomy. the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium.
2.
Zoology. the outermost living layer of an animal, usually composed of one or more layers of cells.
3.
Botany. a thin layer of cells forming the outer integument of seed plants and ferns.

Origin:
1620–30; < Late Latin: surface skin < Greek epidermís upper skin. See epi-, derma

epidermal, epidermic, adjective
epidermically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
epidermis (ˌɛpɪˈdɜːmɪs)
 
n
1.  Also called: cuticle the thin protective outer layer of the skin, composed of stratified epithelial tissue
2.  the outer layer of cells of an invertebrate
3.  the outer protective layer of cells of a plant, which may be thickened by a cuticle
 
[C17: via Late Latin from Greek, from epi- + derma skin]
 
epi'dermal
 
adj
 
epi'dermic
 
adj
 
epi'dermoid
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

epidermis
1626, from Gk. epidermis, from epi- "on" + derma "skin."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

epidermis ep·i·der·mis (ěp'ĭ-dûr'mĭs)
n.
The nonvascular outer protective layer of the skin, covering the dermis.


ep'i·der'mal (-məl) or ep'i·der'mic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
epidermis   (ěp'ĭ-dûr'mĭs)  Pronunciation Key 
  1. The protective outer layer of the skin. In invertebrate animals, the epidermis is made up of a single layer of cells. In vertebrates, it is made up of many layers of cells and overlies the dermis. Hair and feathers grow from the epidermis.

  2. The outer layer of cells of the stems, roots, and leaves of plants. In most plants, the epidermis is a single layer of cells set close together to protect the plant from water loss, invasion by fungi, and physical damage. The epidermis that is exposed to air is covered with a protective substance called cuticle. See more at photosynthesis.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
epidermis [(ep-uh-dur-mis)]

The outside layers of the skin.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

epidermis

in zoology, protective outermost portion of the skin. There are two layers of epidermis, the living basal layer, which is next to the dermis, and the external stratum corneum, or horny layer, which is composed of dead, keratin-filled cells that have migrated outward from the basal layer. The melanocytes, responsible for skin colour, are found in the basal cells. The epidermis has no blood supply and depends on diffusion from the dermal cells for its metabolic needs. The dead-cell layer of the stratum corneum provides the protection from water loss that allows vertebrates to dwell on land. Keratin, produced in migrating epidermal cells, forms the basis of nails, feathers, beaks, and other epidermal derivatives. In humans, epidermal fragments are constantly shed, but the "skin," or stratum corneum, of a snake is ordinarily shed all at once in a period of ecdysis.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The outermost layer of the skin is called the epidermis.
In home use, however, the electronic epidermis would probably remain stable for
  years.
That's when he discovers that his body has been marked by a tattoo, which
  begins to spread all over his evil epidermis.
Corals can also catch food on their mucous coating and absorb nutrients
  directly through their epidermis.
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