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| part of a hair that is embedded in a hair follicle |
| part of a hair projecting beyond the skin |
sebum se·bum (sē'bəm)
n.
The semifluid secretion of the sebaceous glands, consisting chiefly of fat, keratin, and cellular material.
| sebum (sē'bəm) Pronunciation Key
The fatty substance secreted by the sebaceous glands of mammals that protects and lubricates the skin and hair. |