life-threatening

adjective

life-threat·​en·​ing ˈlīf-ˌthre-tᵊn-iŋ How to pronounce life-threatening (audio)
-ˌthret-niŋ
: capable of causing death : potentially fatal
a life-threatening disease/condition
The injuries are serious but not life-threatening.

Examples of life-threatening in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
It is considered a serious condition and can be dangerous or life-threatening, especially to older adults, people with weak immune systems and pregnant people. Mary Walrath-Holdridge, USA TODAY, 23 Feb. 2025 The victim, whose injuries are not life-threatening, was identified as a 30-year-old Spanish tourist, according to The Associated Press. Brie Stimson, Fox News, 22 Feb. 2025 Pope Francis' condition remains serious but not life-threatening, his medical team reported Friday evening, as the 88-year-old pontiff marked a week in the hospital battling pneumonia alongside chronic bronchitis. Tom Rogers, Newsweek, 22 Feb. 2025 Botulism, a rare but serious illness, can be life-threatening, making this recall particularly concerning. Stephanie Gravalese, Forbes, 21 Feb. 2025 See All Example Sentences for life-threatening

Word History

First Known Use

1759, in the meaning defined above

Time Traveler
The first known use of life-threatening was in 1759

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Cite this Entry

“Life-threatening.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/life-threatening. Accessed 3 Mar. 2025.

Medical Definition

life-threatening

adjective
life-threat·​en·​ing ˈlīf-ˌthret-ən-iŋ How to pronounce life-threatening (audio)
: capable of causing death : potentially fatal
life-threatening injuries
a life-threatening allergic reaction
life-threatening arrhythmia
Last Updated: - Updated example sentences
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