Final answer:
The combining form infarct/o-, as seen in the phrase myocardial infarction, means death of myocardial cells.
Step-by-step explanation:
The combining form infarct/o-, as seen in the phrase myocardial infarction, means death of myocardial cells. Myocardial infarction, also known as a heart attack, occurs when blood flow to part of the heart is blocked, leading to damage and death of the heart muscle.