sebum

noun

se·​bum ˈsē-bəm How to pronounce sebum (audio)
: fatty lubricant matter secreted by sebaceous glands of the skin

Examples of sebum in a Sentence

Recent Examples on the Web The buildup of bacteria, sebum, and skin cells into the skin causes pimples. Amelia MacIntyre, Verywell Health, 12 Sep. 2024 Oily skin occurs when the sebaceous glands churn out more sebum—the waxy substance that serves as your skin’s innate moisturizer—than your skin needs. Deanna Pai, Vogue, 10 Aug. 2024 The tea tree is then purified and combined with lactobacillus, a probiotic strain known to calm inflammation, reduce sebum (oil) production, and defend your skin from environmental aggressors such as UV rays and pollution. Venus Wong, refinery29.com, 28 June 2024 This unique toner effectively controls sebum and provides hydration. Priscilla Mak, Rolling Stone, 13 Aug. 2024 See all Example Sentences for sebum 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sebum.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin, tallow, grease

First Known Use

circa 1860, in the meaning defined above

Time Traveler
The first known use of sebum was circa 1860

Dictionary Entries Near sebum

Cite this Entry

“Sebum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sebum. Accessed 19 Sep. 2024.

Medical Definition

sebum

noun
se·​bum ˈsēb-əm How to pronounce sebum (audio)
: lubricant matter that is secreted by sebaceous glands of the skin and is composed of various lipids (such as triglycerides, fatty acids, and squalene)
Androgens, such as testosterone, play a role in the development and exacerbation of acne by stimulating the production of sebum.Isabella Tan, Dermatology Times
… the resulting production of sebum from sebaceous glands aids in lubrication, heat insulation, … antimicrobial activity, and delivery of fat-soluble antioxidants to the skin surface.Dustin H. Marks, American Journal of Clinical Dermatology
see sebocyte

More from Merriam-Webster on sebum

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