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[id-ee-op-uh-thee] /ˌɪd iˈɒp ə θi/
noun, plural idiopathies.
a disease not preceded or occasioned by any known morbid condition.
Origin of idiopathy
1630-40; < New Latin idiopathīa < Greek idiopátheia disease or affection of local origin. See idio-, -pathy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for idiopathy


noun (pl) -thies
any disease of unknown cause
Derived Forms
idiopathic (ˌɪdɪəʊˈpæθɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for idiopathy

1640s, Modern Latin, from Greek idiopatheia, from comb. form of idios "one's own" (see idiom) + -patheia, comb. form of pathos "suffering, disease, feeling" (see pathos). Related: idiopathic.

Online Etymology Dictionary, © 2010 Douglas Harper
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idiopathy in Medicine

idiopathy id·i·op·a·thy (ĭd'ē-ŏp'ə-thē)

  1. A disease of unknown origin or cause.

  2. A primary disease arising spontaneously with no apparent external cause.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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