epidermis
noun
epi·der·mis
ˌe-pə-ˈdər-məs 
1
a
: the outer epithelial layer of the external integument of the animal body that is derived from the embryonic epiblast
specifically
: the outer nonsensitive and nonvascular layer of the skin of a vertebrate that overlies the dermis
b
: any of various animal integuments
2
: a thin surface layer of tissue in higher plants formed by growth of a primary meristem
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Epidermis includes the Greek prefix epi-, meaning "outer;" thus, the epidermis overlies the dermis, or inner layer of skin. The epidermis itself consists of four or five layers; the outermost layer is made of dead cells, which are being shed continuously. The epidermis acts as a physical barrier—a protective wrap over the body's surface, which, by preventing water loss, allows vertebrates to live on land.
Examples of epidermis in a Sentence
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This is when the top layer of your skin (epidermis) activates (synthesizes) vitamin D when exposed to the sun's ultraviolet (UV) radiation.
—
Lana Barhum, Verywell Health, 30 Oct. 2024
Emollients aim to smooth and lubricate the outermost layer of our epidermis and include ingredients such as ceramides and silicones.
—Audrey Noble, Vogue, 23 Oct. 2024
When applied topically, glycerin lubricates the outer layer of your skin (epidermis) to keep water in and avoid dryness.
—Carley Millhone, Health, 8 Oct. 2024
To avoid aggravation, Czech recommends taking a minimal approach to physical exfoliation, which can cause micro-tears on the epidermis if you get carried away.
—Lauren Valenti, Vogue, 4 Oct. 2024
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Lana Barhum, Verywell Health, 30 Oct. 2024
Emollients aim to smooth and lubricate the outermost layer of our epidermis and include ingredients such as ceramides and silicones.
—Audrey Noble, Vogue, 23 Oct. 2024
When applied topically, glycerin lubricates the outer layer of your skin (epidermis) to keep water in and avoid dryness.
—Carley Millhone, Health, 8 Oct. 2024
To avoid aggravation, Czech recommends taking a minimal approach to physical exfoliation, which can cause micro-tears on the epidermis if you get carried away.
—Lauren Valenti, Vogue, 4 Oct. 2024
See all Example Sentences for epidermis
Dictionary Entries Near epidermis
Cite this Entry
“Epidermis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epidermis. Accessed 26 Nov. 2024.
Copy CitationKids Definition
epidermis
noun
epi·der·mis
ˌep-ə-ˈdər-məs
1
: the thin outer layer of the animal body that in vertebrates forms an insensitive covering over the dermis
2
: a thin surface layer of protecting cells in seed plants and ferns
Medical Definition
epidermis
noun
epi·der·mis
-ˈdər-məs
1
: the outer epithelial layer of the external integument of the animal body that is derived from the embryonic epiblast
specifically
: the outer nonsensitive and nonvascular layer of the skin of a vertebrate that overlies the dermis
2
: any of various animal integuments
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