Definition of epidermis in English:


Syllabification: ep·i·der·mis
Pronunciation: /ˌepiˈdərmis


  • 1The outer layer of cells covering an organism, in particular.
    More example sentences
    • Basal cell carcinomas are derived from the basal layer of keratinocytes, which is the deepest cell layer of the epidermis.
    • Basal cell carcinoma is a tumor arising from the basal cell layer of the epidermis.
    • There is another layer of cells between the basal cells and the keratin-rich epidermis known as spiny cells.
  • 1.1 Zoology & Anatomy The surface epithelium of the skin of an animal, overlying the dermis.
    More example sentences
    • The skin consists of an epidermis, dermis, adipose tissue layer and subcutaneous connective tissue.
    • At the end of gastrulation, the epidermis only covers the dorsal region and the ventral region is bare.
    • The thickness of the epidermis, dermis, and subcutaneous tissue varies from person to person and from one part of the body to another.
  • 1.2 Botany The outer layer of tissue in a plant, except where it is replaced by periderm.
    More example sentences
    • The plant epidermis is a multifunctional tissue playing important roles in water relations, defence and pollinator attraction.
    • In the epidermis of third-year leaves, the densest silica deposition was observed in silica cells of both the adaxial and abaxial epidermises as in first-year leaves.
    • Leaves are composed of various kinds of tissues, including epidermis, mesophyll, bundle sheath, and vascular bundles.



Pronunciation: /-ˈdərməl/
More example sentences
  • Other clays totally mask light penetration and stop gas exchange on epidermal leaf and fruit cells.
  • It is hypothesized that ions diffuse through the epidermal walls and enter the short cells at their outer tangential plasma membranes.
  • Feeding occurred with tube feet extended through the orals and by epidermal uptake of nutrients.


Pronunciation: /-ˈdərmik/
More example sentences
  • Fourteen genes were mapped to this region; of these, 11 were expressed in the skin (5 epidermic cytokeratin and 6 hard keratin genes), but none were mutated in hague mice.
  • The membranous outer periclinal wall of the epidermic cells would favour water absorption, thus enhancing the adherence and germination capacity, as in some examples of the family Lamiaceae.


Pronunciation: /-ˈdərˌmoid/
More example sentences
  • Since the submission of this manuscript, we have seen a second worker from the Rhode Island plant with a lung carcinoma, this one an epidermoid carcinoma in a current smoker.
  • The radiologic differential diagnosis included eosinophilic granuloma, hemangioma, and epidermoid tumor.
  • This syndrome carries an increased risk of colorectal cancer and associated osteomas, epidermoid cysts and sesmoid tumors.


early 17th century: via late Latin from Greek, from epi 'upon' + derma 'skin'.

More definitions of epidermis

Definition of epidermis in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day kerf
Pronunciation: kərf
a slit made by cutting with a saw