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myocardium

myocardium
  (maɪəʊˈkɑːdɪəm)
  [mod.L., f. Gr. µυ(ο)- myo- + καρδία heart.]
  The muscular substance of the heart. Hence myoˈcardial a. Also ˌmyocarˈditis, inflammation of the myocardium; whence ˌmyocarˈditic a.

1866 A. Flint Princ. Med. 279 Myocarditis. 1868 Trans. Path. Soc. Lond. XIX. 195 Concurrent pericarditis, myocarditis, and endocarditis. 1879 St. George's Hosp. Rep. IX. 405 Abscess of the myocardium. 1880 Flint Princ. Med. 332 To differentiate the different myocardial lesions. 1896 Allbutt's Syst. Med. I. 816 Myocarditic changes.

Oxford English Dictionary

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