Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The semifluid secretion of the sebaceous glands, consisting chiefly of fat, keratin, and cellular material.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat, keratin and cellular debris.

from The Century Dictionary and Cyclopedia

  • n. The secretion of the sebaceous glands. Also sebum cutaneum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the oily secretion of the sebaceous glands; with perspiration it moistens and protects the skin

Etymologies

Latin sēbum, tallow.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin sebum. (Wiktionary)

Examples

  • Besides sprouting up hairs that sense things, your skin lubricates itself with oils we call sebum produced by sebaceous glands and also absorbs certain medications and hormones.

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  • The condition is caused by excess secretion of a natural oil called sebum, which is produced by the sebaceous glands.

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  • They throw off a secretion known as sebum, which is made up principally of dead cells that have undergone fatty degeneration and of other debris.

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  • Sebaceous glands produce a substance called sebum, which is in charge of keeping the skin and hair moisturized.

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  • Your skin is lined with sebaceous glands that secrete an oily substance called sebum, which serves to keep your skin waterproof and resistant to infection by undesirable microorganisms.

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  • The major lipid-soluble antioxidant in your skin hitches a ride to the stratum corneum, the dead upper layer of skin, with your natural oils, called sebum.

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  • They secrete a natural oil called sebum through the hair follicles onto your skin's surface.

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  • Men and women both have male sex hormones and these cause follicles next to fine hairs on the face, chest and back to produce an oil called sebum - sometimes in excessive quantities, which blocks glands and creates spots.

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  • You may notice a clearish, white to yellow liquid being secreted from the piercing called sebum - this may sound gross, but if you do have this discharge, smell it.

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  • Sebaceous glands are responsible for producing sebum, which is responsible for keeping the skin and hair moisturized.

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