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rosacea

noun

ro·​sa·​cea rō-ˈzā-sh(ē-)ə How to pronounce rosacea (audio)
: a chronic inflammatory skin disorder typically involving the nose, forehead, and chin that is characterized especially by redness, flushing, telangiectasia, inflamed lesions, and burning sensation, and sometimes by eye dryness and irritation and thickening of tissues especially of the nose

called also acne rosacea

Examples of rosacea 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.
With consistent use, signs of aging, acne scarring, rosacea and more may be come a thing of skin conditions’ past (or at least dramatically reduced). Conçetta Ciarlo, Vogue, 25 Nov. 2025 For anybody with rosacea, chances are that–like me–you’ll be well aware that finding the best serums for rosacea that actually calm skin (without sending it into a frenzy) can feel like looking for a needle in a haystack. Lucy Partington, Glamour, 17 Nov. 2025 This little powerhouse pairs a slow-release vitamin C with azelaic acid exosomes—tiny vesicles that help deliver acne- and rosacea-fighting ingredients deep into the skin—to tackle everything from redness and dark spots to uneven tone, all while giving your skin a serious radiance boost. Lily Wohlner, Allure, 13 Nov. 2025 For rosacea, the formation of new collagen helps constrict visible vessels. Wyles Daniel, USA Today, 23 Sep. 2025 See All Example Sentences for rosacea

Word History

Etymology

short for New Latin acne rosacea "rose-colored acne"

First Known Use

1843, in the meaning defined above

Time Traveler
The first known use of rosacea was in 1843

Browse Nearby Words

Cite this Entry

“Rosacea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rosacea. Accessed 28 Nov. 2025.

Medical Definition

rosacea

noun
ro·​sa·​cea rō-ˈzā-sh(ē-)ə How to pronounce rosacea (audio)
: a chronic inflammatory skin disorder typically involving the nose, cheeks, forehead, and chin that is characterized especially by redness, flushing, telangiectasia, inflamed lesions, burning sensation, and sometimes eye dryness and irritation and thickening of tissues especially of the nose

called also acne rosacea

Last Updated: - Updated example sentences
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