1. (n.) The formation of bone; the process, in the growth of an animal, by which inorganic material (mainly lime salts) is deposited in cartilage or membrane, forming bony tissue; ostosis.

2. (n.) The state of being changed into a bony substance; also, a mass or point of ossified tissue.

angina angina pectoris aortic insufficiency aortic stenosis apoplectic stroke apoplexy arrhythmia atherosclerosis atrial fibrillation auricular fibrillation beriberi heart calcification callusing cardiac arrest cardiac insufficiency cardiac shock cardiac stenosis cardiac thrombosis carditis case hardening concretion congenital heart disease cor biloculare cor juvenum cor triatriatum cornification coronary coronary insufficiency coronary thrombosis crystallization diastolic hypertension encased heart endocarditis extrasystole fatty heart fibroid heart firming flask-shaped heart fossilization frosted heart granulation hairy heart hardening heart attack heart block heart condition heart disease heart failure high blood pressure hornification hypertension hypertensive heart disease induration ischemic heart disease lapidification lithification mitral insufficiency mitral stenosis myocardial infarction myocardial insufficiency myocarditis myovascular insufficiency ossification ox heart palpitation paralytic stroke paroxysmal tachycardia pericarditis petrifaction petrification pile premature beat pseudoaortic insufficiency pulmonary insufficiency pulmonary stenosis rheumatic heart disease round heart sclerosis setting solidification steeling stiffening stony heart stroke tachycardia tempering thrombosis toughening tricuspid insufficiency tricuspid stenosis turtle heart varicose veins varix ventricular fibrillation vitrifaction vitrification