adjective Pathology.

of unknown cause, as a disease.

Origin of idiopathic

First recorded in 1660–70; idio- + -pathic
Related formsid·i·o·path·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for idiopathic

Historical Examples of idiopathic

idiopathic in Medicine




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

idiopathic in Science



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