noun Pathology.
a chronic form of acne affecting the nose, forehead, and cheeks, characterized by red pustular lesions.
Also called acne rosacea.

1825–35; < Neo-Latin (acnē) rosācea rose-colored (acne), Latin, feminine of rosāceus rosaceous Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
rosacea (rəʊˈzeɪʃə)
Also called: acne rosacea a chronic inflammatory disease causing the skin of the face to become abnormally flushed and sometimes pustular

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

rosacea ro·sa·ce·a (rō-zā'shē-ə)
A chronic dermatitis of the face, especially of the nose and cheeks, characterized by a red or rosy coloration with deep-seated papules and pustules and caused by dilation of capillaries. Also called acne erythematosa, acne rosacea.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Cold weather is a trigger for a lot of people with rosacea.
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