heart attack

noun

: an acute episode of coronary heart disease marked by the death or damage of heart muscle due to insufficient blood supply to the heart usually as a result of a coronary artery becoming blocked by a blood clot formed in response to a ruptured or torn fatty arterial deposit

Note: Symptoms of heart attack include discomfort or pain in the chest, shoulder, arm, back, neck, or jaw, shortness of breath, dizziness or lightheadedness, heartburn, nausea, excessive sweating, and extreme fatigue.

called also myocardial infarction

Examples of heart attack in a Sentence

Her chest pains turned out to be caused by a minor heart attack.

He died of a massive heart attack.

Recent Examples on the Web

Over the years, researchers have tried to tie your body getting an hour less of sleep that night to a variety of issues, including an increase in car crashes and health problems such as heart attacks and strokes. —Chris Sims, Louisville Courier Journal, 17 Oct. 2025

These pangs are only compounded by the cliffhanger that concluded Season 2, in which President William Rayburn (Michael McKean) suffered a fatal heart attack and elevated his vice president, Grace Penn (Allison Janney), to the top of the call sheet. —Alison Herman, Variety, 16 Oct. 2025

The county reopened the trauma center along with stroke and heart attack services on its first day of ownership earlier this year. —Grace Hase, Mercury News, 16 Oct. 2025

Heart problems run in the family for Pollard, whose father, Pearl, was 6-foot-8 and died from a heart attack related to the condition when the former Kings big man was a teenager. —Chris Biderman, Sacbee.com, 14 Oct. 2025

Word History

First Known Use

1836, in the meaning defined above

Rhymes for heart attack

• almanac
• camelback
• cardiac
• carryback
• cluniac
• diamondback
• lumberjack
• maniac
• paperback
• piggyback
• quarterback
• saddleback

Kids Definition

heart attack

noun

: a sudden severe occurrence of damage to heart muscle caused by too little blood going to the heart usually as a result of the blocking of a coronary artery (as by a bit of fatty matter)

Medical Definition

heart attack

noun

: an acute episode of coronary heart disease marked by the death or damage of heart muscle due to insufficient blood supply to the heart muscle usually as a result of a coronary artery becoming blocked by a blood clot formed in response to a ruptured or torn fatty arterial deposit

Note: Symptoms of heart attack include discomfort or pain in the chest, shoulder, arm, back, neck, or jaw, shortness of breath, dizziness or light-headedness, heartburn, nausea, excessive sweating, and extreme fatigue.

When a patient is in the throes of a heart attack, the physician's goal is restoring adequate blood flow to the starving heart muscle as swiftly as possible.

—Harvard Medical School Health Letter

It has long been known that aspirin helps prevent blood clots … and many studies have shown that the drug can reduce the incidence of heart attacks and strokes.

—Peter Aldhous, Science

called also acute myocardial infarction, myocardial infarction

compare angina pectoris, coronary insufficiency, heart failure sense 1