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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For those who want a lightweight oil that removes sebum and grim while soothing the skin, look no further. Rosa Jisoo Pyo, Vogue, 14 Apr. 2025 By removing the underlying mechanism of acne (sebum production), isotretinoin unclogs pores and quells skin inflammation. Caroline C. Boyle, USA Today, 11 Apr. 2025 People who take a GLP-1 medication also tend to have elevated levels of insulin-like growth factor 1 (IGF-1), a growth hormone that helps control sebum production. Claire Bugos, Verywell Health, 10 Apr. 2025 Even though the formula itself is oil-free, the sebum on your face tends to work overtime to override that quality. Annie Blackman, Allure, 4 Apr. 2025 See All Example Sentences for sebum

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

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Cite this Entry

“Sebum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sebum. Accessed 2 May. 2025.

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

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