Input (grade 10): Cardiomyopathy, which literally means "heart muscle disease," is the deterioration of the function of the myocardium (i.e., the actual heart muscle) for any reason.
Output (grade 7): The word cardiomyopathy means "heart muscle disease". Cardiomyopathies are a group of diseases in which the function of the myocardium (heart muscle) is impaired for any reason.