What is the medical term meaning insufficient blood flow to meet the needs of the heart muscle?

Myocardial infarction [MI] (myo = muscle + cardi = heart + al = pertaining to ++ in = within + farc = stuff + on = noun form) is also known as a heart attack. What sets the MI apart from a cardiac obstruction is that because of the hypoxia (low oxygen) downstream from the blockage, the tissue becomes necrotic (dies).