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Synonyms

heart attack

American  

noun

Pathology.

  1. damage to an area of heart muscle that is deprived of oxygen, usually due to blockage of a diseased coronary artery, typically accompanied by chest pain radiating down one or both arms, the severity of the attack varying with the extent and location of the damage; myocardial infarction.

heart attack British  

noun

  1. any sudden severe instance of abnormal heart functioning, esp coronary thrombosis

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
heart attack Scientific  

  1. Necrosis of a region of the heart muscle caused by an interruption in the supply of blood to the heart, usually as a result of occlusion of a coronary artery resulting from coronary artery disease. Symptoms typically include sudden, crushing chest pain, nausea, and sweating. Characteristic changes in the electrocardiogram are used to diagnose heart attacks.

  2. Also called myocardial infarction

heart attack Cultural  

  1. An episode of heart failure or the stopping of normal heart function; a coronary thrombosis. Symptoms of a heart attack include pain and pressure in the chest, which often spread to the shoulder, arm, and neck. Today, physicians tend to define heart attack in terms of muscle damage to the heart caused by oxygen deprivation.

Etymology

Origin of heart attack

First recorded in 1925–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Acute pneumonia and a previous myocardial infarction — a heart attack — were listed as contributing factors in his death.

From Los Angeles Times • May 5, 2026

After a heart attack, gaps can form between endothelial cells, which line the inside of blood vessels.

From Science Daily • May 5, 2026

But in 2015, with his father – Samsung's chairman – in hospital following a heart attack, Lee's succession was not secure.

From BBC • Apr. 29, 2026

That same night, he died of a heart attack at age 67.

From Salon • Apr. 27, 2026

A heart attack, in the middle of soccer practice, for no good reason.

From "King and the Dragonflies" by Kacen Callender

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.