com·​e·​do | \ ˈkä-mə-ˌdō How to pronounce comedo (audio) \
plural comedones\ ˌkä-​mə-​ˈdō-​(ˌ)nēz How to pronounce comedones (audio) \

Definition of comedo

: a small bump or blemish on the skin (as of the face or back) usually containing a plug of sebum in a skin pore: such as
a or open comedo : blackhead sense 1
b or closed comedo : whitehead

Examples of comedo in a Sentence

Recent Examples on the Web The friction of the mask can also block and clog pores, leading to the formation of comedones or blackheads, says Dr. Suozzi. Leah Groth,, "'Maskne' Is a Real Thing—Here's How to Stop Face Mask Breakouts," 15 May 2020 There are two different types of comedones: Open (blackheads) and closed (whiteheads). Renee Jacques, Allure, "How to Get Rid of Blackheads, According to Dermatologists," 25 Apr. 2020 Really, only when your pores have developed comedones—blackheads or whiteheads. Sarah Jacoby, SELF, "PSA: It’s Totally Fine and Normal to Have Visible Pores on Your Face," 23 July 2019 So why are some people more prone to closed comedones than others? Sara Coughlin, SELF, "How to Treat Closed Comedones, the Acne You Didn’t Know You Had," 1 Aug. 2019 There are two different types of comedones: Open (blackheads) and closed (whiteheads). Allure, "How to Get Rid of Blackheads, According to Dermatologists," 3 May 2019 So, in an attempt to figure out if that was true, scientists developed ways to measure how many comedones a particular ingredient or formulation was likely to cause. A.a. Newton, SELF, "Here’s How to Tell if Your Skin-Care Products Are Actually Noncomedogenic," 8 Aug. 2019 The trouble with comedones begin when dead skill cells get trapped inside the opening, and then slowly clogs up the hole. Sarah Kinonen, Allure, "Dr. Pimple Popper Extracts Cyst From Dilated Pore in Latest Video (Exclusive)," 5 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'comedo.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of comedo

1730, in the meaning defined above

History and Etymology for comedo

New Latin, from Latin, glutton, from comedere to eat — more at comestible

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Time Traveler for comedo

Time Traveler

The first known use of comedo was in 1730

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Cite this Entry

“Comedo.” Dictionary, Merriam-Webster, Accessed 7 Aug. 2020.

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More Definitions for comedo


com·​e·​do | \ ˈkäm-ə-ˌdō How to pronounce comedo (audio) \
plural comedones\ ˌkäm-​ə-​ˈdō-​(ˌ)nēz How to pronounce comedones (audio) \

Medical Definition of comedo

More from Merriam-Webster on comedo

Rhyming Dictionary: Words that rhyme with comedo

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