cryptogenic

cryptogenic

[krip-tuh-jen-ik]
adjective
of obscure or unknown origin, as a disease.

Origin:
1905–10; crypto- + -genic

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Collins
World English Dictionary
cryptogenic (ˌkrɪptəʊˈdʒɛnɪk)
 
adj
(esp of diseases) of unknown or obscure origin

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

cryptogenic cryp·to·gen·ic (krĭp'tə-jěn'ĭk)
adj.
Of obscure or unknown origin. Used of diseases.

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