sebaceous gland

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sebaceous gland In Mammalia, a skin gland, projecting deep into the dermis and almost always opening into a hair follicle, which secretes a fatty substance which helps to waterproof the hair.

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sebaceous gland A small gland occurring in mammalian skin. Its duct opens into a hair follicle, through which it discharges sebum onto the skin surface.

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sebaceous gland n. any of the simple or branched glands in the skin that secrete an oily substance, sebum. They open into hair follicles and their secretion is produced by the disintegration of their cells.

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sebaceous gland Gland in the skin producing the oily substance sebum, which secretes onto the skin and hair, making them water-repellent and supple.