noun Pathology.
any disease of the heart muscle, leading to decreased function: usually of unknown cause.

1960–65; cardio- + myopathy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cardiomyopathy (ˌkɑːdɪəʊmaɪˈɒpəθɪ)
pathol a disease of the heart muscle usually caused by a biochemical defect or a toxin such as alcohol

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

cardiomyopathy car·di·o·my·op·a·thy (kär'dē-ō-mī-ŏp'ə-thē)
A disease or disorder of the heart muscle, especially of unknown cause. Also called myocardiopathy.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cardiomyopathy   (kär'dē-ō-mī-ŏp'ə-thē)  Pronunciation Key 
Any of various structural or functional abnormalities of the cardiac muscle, usually characterized by loss of muscle efficiency and sometimes heart failure. Cardiomyopathy can result from numerous causes, including congenital defects, acute or chronic infections, coronary artery disease, drugs and toxins, metabolic disorders, connective tissue disorders, or nutritional deficiencies. In some patients, the cause is unknown.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


any cardiac disease process that results in heart failure due to a decrease in the pumping power of the heart or due to an impairment in the filling of the cardiac chambers. Persons with cardiomyopathy frequently retain excess fluid, resulting in congestion of the lungs, and have symptoms of weakness, fatigue, and shortness of breath. Sometimes they develop a potentially fatal arrhythmia, or abnormal heart rhythm

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Cardiomyopathy is usually discovered when the doctor is examining and testing you for the cause of heart failure.
Ischemic cardiomyopathy is a common cause of heart failure.
Signs and symptoms are similar to restrictive cardiomyopathy and cardiac tamponade.
Click the icon to see an image of hypertrophic cardiomyopathy.
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