in·​farc·​tion | \ in-ˈfärk-shən How to pronounce infarction (audio) \
plural infarctions

Definition of infarction

: injury or death of tissue (as of the heart or lungs) resulting from inadequate blood supply especially as a result of obstruction of the local circulation by a thrombus or embolus : the process of forming an infarct In myocardial infarction a coronary artery becomes obstructed and this leads to irreversible damage and necrosis of the heart tissue.— Nicholas C. Price et al. When dural sinuses are thrombosed, cortical and deep venous cerebral drainage is impaired, which can lead to infarction of the involved cerebral territories.— Douglas J. Quint

First Known Use of infarction

1710, in the meaning defined above

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Time Traveler for infarction

Time Traveler

The first known use of infarction was in 1710

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Cite this Entry

“Infarction.” Dictionary, Merriam-Webster, Accessed 28 Feb. 2021.

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in·​farc·​tion | \ in-ˈfärk-shən How to pronounce infarction (audio) \

Medical Definition of infarction

1 : the process of forming an infarct severe stress sometime between the 5th and 20th days after infarctionJournal of the American Medical Association
2 : infarct developed a full-blown infarction— W. A. Nolen

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