- of unknown cause, as a disease.
Origin of idiopathic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for idiopathic
What cases of chloasma are included in the idiopathic group?Essentials of Diseases of the Skin
Henry Weightman Stelwagon
The most frequent form of idiopathic insanity is melancholia.Essays In Pastoral Medicine
A clear case of idiopathic or spontaneous hydrophobia has never yet been known to occur in the human subject.
The birth of Topsy was idiopathic—in that learned lady's opinion.Hard Cash
Hydrocephalus may occur, either as an idiopathic or symptomatic affection.
- 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.
- 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.