Sebum

//ˈsibm̩// noun

Definitions

Noun
  1. 1
    A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat, keratin and cellular debris. countable, uncountable

    "‘I mean, it is not simply adolescent acne caused by the over-excretion of sebum.’"

  2. 2
    the oily secretion of the sebaceous glands; with perspiration it moistens and protects the skin wordnet

Etymology

Learned borrowing from Latin sēbum (“tallow, grease; suet”).

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