[ id-ee-uh-path-ik ]
See synonyms for idiopathic on
  1. of unknown cause, as a disease.

Origin of idiopathic

First recorded in 1660–70; idio- + -pathic

Other words from idiopathic

  • id·i·o·path·i·cal·ly, adverb

Words Nearby idiopathic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use idiopathic in a sentence

  • This is an idiopathic disease of the blood-making organs, which is accompanied by an enormous increase in number of leukocytes.

    A Manual of Clinical Diagnosis | James Campbell Todd
  • It seems not unlikely that the underlying cause of so-called idiopathic insanity is usually some change within the brain cells.

  • idiopathic is a word we medical men use to conceal our ignorance of the cause of disease.

  • idiopathic diseases are those that have come of themselves, that is, without ascertainable cause.

  • The mental diseases that are of special interest in this respect are the so-called idiopathic insanities.

Scientific definitions for idiopathic


[ ĭd′ē-ə-păthĭk ]

  1. 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.