Definition of dermis in US English:



  • 1The skin.

    • ‘The dermal-epidermal junction, papillary dermis, and reticular dermis were assessed separately.’
    • ‘Cigarettes independently damage the elastic fibers of the dermis and promote elastosis similar to that found in sun-exposed skin.’
    • ‘Occasionally, the upper reticular dermis also may be infiltrated, but by isolated single cells.’
    • ‘The reactive epithelium may extend into the superficial reticular dermis, simulating a carcinoma.’
    • ‘Mitotic figures are variably present, and tumor aggregates may extend into the reticular dermis or even subcutaneous fat.’
    1. 1.1Anatomy The thick layer of living tissue below the epidermis which forms the true skin, containing blood capillaries, nerve endings, sweat glands, hair follicles, and other structures.
      • ‘The biopsy should include surrounding skin with underlying dermis and connective tissue so that the pathologist can evaluate the depth of stromal invasion.’
      • ‘The middle layer, or dermis, contains connective tissue, small blood vessels, sweat and oil glands, nerves, and cells that produce collagen, called fibroblasts.’
      • ‘Although it is composed of two primary layers, the outer epidermis and the inner dermis, it also contains arteries, veins, nerve fibers, sweat glands and hair follicles among other things.’
      • ‘The thicker or inner layer of the dermis contains blood vessels, hair follicles, nerve endings, sweat and sebaceous glands.’
      • ‘The epidermis is devoid of blood vessels but is nourished by diffusion from capillaries in the underlying dermis.’
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Mid 19th century: modern Latin, suggested by epidermis.