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See more synonyms for idiopathic on Thesaurus.com
adjective Pathology.
  1. of unknown cause, as a disease.
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Origin of idiopathic

First recorded in 1660–70; idio- + -pathic
Related formsid·i·o·path·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for idiopathic

prime, dominant, leading, initial, constitutional, vital, immediate, underlying, fundamental, elementary, main, essential, principal, originating, proceeding, soaring, rising, springing, issuing, stemming

Examples from the Web for idiopathic

Historical Examples of idiopathic

idiopathic in Medicine


  1. Of or relating to a disease having no known cause; agnogenic.
  2. Of or relating to a disease that is not the result of any other disease.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

idiopathic in Science


  1. Relating to or being a disease having no known cause.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.