epidermal

IPA/ˌep.ɪˈdɜː.məl/
KK[ˌɛpədˈɚməl]IPA/ˌep.əˈdɝː.məl/

epidermal — adjective

  • epidermalpositive
  • more epidermalcomparative
  • most epidermalsuperlative

1. relating to the thin outermost layer of skin that covers a person's or animal's

1.adjectiveC1
Definition

relating to the thin outermost layer of skin that covers a person's or animal's body and protects the tissues underneath it.

Example

The nurse applied a special cream to the epidermal layer of Hari's burnt arm.

epidermal layer of [body part]

Maja's dermatologist explained that epidermal cells renew themselves every few weeks.

epidermal cells + biological self-renewal

Common collocations
  • epidermal cells
  • epidermal layer
  • epidermal tissue
  • epidermal growth factor
  • epidermal surface
  • epidermal wound
Synonyms
  • cutaneous

    broader — refers to the skin as a whole, not specifically the outermost layer

Antonyms
  • dermal

    relates to the dermis, the deeper layer beneath the epidermis

  • subcutaneous

    refers to the tissue layer below the dermis

Grammar Patterns

epidermal + noun (most common)

be + epidermal

Usage Note

Frequently used in medical and scientific writing. Almost always appears directly before a noun, as in epidermal cells, epidermal layer, or epidermal tissue.

Common Mistakes

The burn only affected the dermal layer, so it will heal quickly.' (when meaning the outermost layer).
The burn only affected the epidermal layer, so it will heal quickly.
'Dermal' refers to the deeper dermis; 'epidermal' refers to the outermost epidermis.

Word family

Synonym discussion

Sense: adjective/1

Epidermal, cutaneous, dermal, and subcutaneous all relate to the skin but refer to different layers or aspects. Epidermal specifically describes the outermost layer (the epidermis) — the part you can see and touch. Cutaneous is the broadest term, covering the entire skin organ including all its layers. Dermal refers to the dermis, the thicker middle layer beneath the epidermis that contains blood vessels and nerve endings. Subcutaneous describes the deepest layer of fat and connective tissue under the dermis. For example, a doctor might say 'superficial epidermal burn' (only the top layer is damaged), 'cutaneous infection' (the whole skin is affected), 'dermal injection' (the needle goes into the middle layer), or 'subcutaneous fat' (the deepest padding layer).

epidermal ↗cutaneous ↗dermal ↗subcutaneous ↗

Common collocations

Nouns

  • epidermal cell
  • epidermal layer
  • epidermal tissue

Adverbs

  • purely epidermal
  • strictly epidermal

Phrases

  • epidermal growth factor
  • epidermal stem cell

Prepositions

  • epidermal in nature
  • within the epidermal layer

Etymology

GreekLatinEnglish

Epidermal comes from the Greek word 'epidermis', which is made up of 'epi-' meaning 'upon' or 'on top of' and 'derma' meaning 'skin'. So the word literally means 'on top of the skin' — which matches its meaning: the layer of skin that sits on top of the deeper layers. The '-al' suffix turns the noun epidermis into an adjective.

First known use

1816

1816, in the meaning defined above