noun🔗Share心肌 The muscular substance of the heart; the middle of the three layers forming the outer wall of the human heart."The doctor explained that the heart attack damaged a section of the patient's myocardium, weakening the heart's ability to pump blood. "医生解释说,心脏病发作损伤了病人的一部分心肌,从而减弱了心脏泵血的能力。medicineanatomyorganphysiologybodyChat with AIVocabulary GamePractice Reading