from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An inflammatory disease of the sebaceous glands and hair follicles of the skin that is marked by the eruption of pimples or pustules, especially on the face.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A skin condition, usually of the face, that is common in adolescents. It is characterised by red pimples, and is caused by the inflammation of sebaceous glands through bacterial infection.
  • n. A pattern of blemishes in an area of skin resulting from the skin condition.

from the GNU version of the Collaborative International Dictionary of English

  • n. A pustular affection of the skin, due to changes in the sebaceous glands.

from The Century Dictionary and Cyclopedia

  • n. An eruption occurring most frequently on the face, and on the shoulders and chest, about the period of puberty.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones


New Latin, probably from misreading of Greek akmē, point, facial eruption; see acme.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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