Definition of CORIUM

• the dense inner layer of skin beneath the epidermis, composed of connective tissue, blood and lymph vessels, sweat glands, hair follicles, and an elaborate sensory nerve network
• leather armour [n CORIUMS or CORIA] / a skin layer, also CUTIS [n CORIUMS or CORIA]
• the thickened, leathery, basal portion of a hemelytron