unstable angina

noun

: angina pectoris characterized by sudden changes (such as an increase in the severity or length of anginal attacks or a decrease in the exertion required to precipitate an attack) especially when symptoms were previously stable

Example Sentences

Recent Examples on the Web The cardiovascular risks that appear to be linked to Ground Zero exposure include heart attack, stroke, unstable angina, coronary artery surgery and angioplasty. NBC News, 6 Sep. 2019 That includes people who've recently had a heart attack or have unstable angina (chest pain that arises even at rest), and older people prone to low blood pressure. Amy Norton, chicagotribune.com, 9 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unstable angina.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of unstable angina was in 1972

Dictionary Entries Near unstable angina

Cite this Entry

“Unstable angina.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unstable%20angina. Accessed 1 Feb. 2023.

Medical Definition

unstable angina

noun
: angina pectoris characterized by sudden changes (as an increase in the severity or length of anginal attacks or a decrease in the exertion required to precipitate an attack) especially when symptoms were previously stable
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