: the vascular, thick layer of the skin lying below the epidermis and above the superficial fascia that contains fibroblasts, macrophages, mast cells, B cells, and sensory nerve endings and has an extracellular matrix composed of proteoglycans and glycoproteins embedded with collagen and elastin fibers

called also corium, cutis

see hair illustration

-dermis

2 of 2

noun combining form

: layer of skin or tissue
endodermis

Examples of dermis in a Sentence

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Noun
Beneath the epidermis is the dermis, which contains blood vessels, nerves, and structures like hair follicles and sweat glands. New Atlas, 6 Oct. 2025 Safely rub homemade mixture into your skin when showering, and voila — dead skin doesn’t stand a chance against this dermis-friendly concoction. Joey Skladany, Southern Living, 17 June 2026 This provides the practitioner with visuals of the skin’s dermis, epidermis, and tissue layers—a view that is unique to the device. Audrey Noble, Allure, 23 Oct. 2025 May Improve Skin Collagen is the main component of the dermis (the inner layer of the skin). Ayesha Gulzar, Verywell Health, 15 Dec. 2025 See All Example Sentences for dermis

Word History

Etymology

Noun

New Latin, from Late Latin -dermis

Noun combining form

Late Latin, from Greek, from derma

First Known Use

Noun

circa 1830, in the meaning defined above

Time Traveler
The first known use of dermis was circa 1830

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Cite this Entry

“Dermis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dermis. Accessed 7 Jul. 2026.

Kids Definition

: the sensitive inner layer of skin directly under the epidermis

Medical Definition

: the vascular, thick layer of the skin lying below the epidermis and above the superficial fascia that contains fibroblasts, macrophages, mast cells, B cells, and sensory nerve endings and has an extracellular matrix composed of proteoglycans and glycoproteins embedded with collagen and elastin fibers

called also corium, cutis, cutis vera, derma

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