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.
The product immediately calmed down my irritable, rosacea-prone skin while delivering intense hydration that lasted all day. — Gina Vaynshteyn, StyleCaster, 31 Aug. 2026 By targeting this pathway, azelaic acid can lessen the flushing and redness associated with rosacea. — Kelsey Stewart, Allure, 18 Aug. 2026 Notably for this article, Watchmaker also shuts down the myth that people with rosacea, eczema or sensitive skin can’t use retinol. — Rachel Burchfield, Forbes.com, 29 July 2026 Green Light Therapy and Redness Many green light therapy devices market themselves as treating skin redness, rosacea, and broken capillaries. — Sarah Bence, Verywell Health, 29 July 2026 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

Phrases Containing rosacea

Rhymes for rosacea

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Browse Nearby Words

rosace
rosacea
Rosaceae
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Cite this Entry

“Rosacea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rosacea. Accessed 2 Sep. 2026.

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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

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