Idiopathic

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idiopathic

adjective Pathology. of unknown cause, as a disease.
id·i·o·path·ic   (d--p th k, d--) adj. Of, relating to, or designating a disease having no known cause. id i·o·path i·cal·ly adv. idiopathic   (d--p th k)
Definition of idiopathic from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.
H]onest distinction between what is known and what is not appears again and again in fifth-centure [B.C.] thought, and is surely one of its chief glories.”

idiopathic adj. Of, relating to, or designating a disease having no known cause. idiopathically id ' iopath ' ically
Online Medical Dictionary and glossary with medical definitions
idiopathic /id·io·path·ic/ (id″e-o-path´ik) self-originated; occurring without known cause. id·i·o·path·ic (d--p th k) adj. 1. Of or relating to a disease having no known

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