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

  • n. A disease of unknown origin or cause.
  • n. A primary disease arising spontaneously with no apparent external cause.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Something idiopathic; a disease having no known cause.

from the GNU version of the Collaborative International Dictionary of English

  • n. A peculiar, or individual, characteristic or affection.
  • n. A morbid state or condition not preceded or occasioned by any other disease; a primary disease.

from The Century Dictionary and Cyclopedia

  • n. In pathology, an idiopathic character of disease; a morbid state or condition not preceded and occasioned by any other disease.
  • n. An individual or personal state of feeling; a mental condition peculiar to one's self.

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

  • n. any disease arising from internal dysfunctions of unknown cause


New Latin idiopathīa, primary disease, from Greek idiopatheia : idio-, idio- + -patheia, -pathy.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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  • Looks like the apathy of idiots. But isn't.

    February 13, 2008