myocarditis

American

[mahy-oh-kahr-dahy-tis] / ˌmaɪ oʊ kɑrˈdaɪ tɪs /

noun

Pathology.

inflammation of the myocardium.

myocarditis British

/ ˌmaɪəʊkɑːˈdaɪtɪs /

noun

inflammation of the heart muscle

"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

Etymology

Origin of myocarditis

First recorded in 1865–70; myo- + carditis

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.

The findings, published in Nature Communications, explain how viruses responsible for illnesses such as polio, encephalitis, myocarditis, and even the common cold take control of cellular machinery to copy themselves.

From Science Daily • May 13, 2026

Bakken returned to competition in 2024, having been kept out since 2022 with the heart condition myocarditis.

From BBC • Dec. 23, 2025

Research published in medical journals indicates that myocarditis after a COVID-19 mRNA vaccine is rare, although it is more likely to occur in boys within the first week of receiving the second dose.

From MarketWatch • Dec. 1, 2025

What’s more, another 2024 study showed that people who developed myocarditis after vaccination had fewer complications than those who developed the condition after getting infected with COVID-19.

From Salon • Sep. 5, 2025

It is my medical opinion that in Hawaii you had an episode of myocarditis triggered by a viral infection.

From "Everything, Everything" by Nicola Yoon

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