: exceptionally high fever especially when induced artificially for therapeutic purposes

Examples of hyperthermia in a Sentence

Recent Examples on the Web
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Though authorities have not ruled an official cause of death for Pell’s son, his attorneys referenced hot car deaths and hyperthermia outside the courthouse when speaking to news reporters. Justin Muszynski, Hartford Courant, 18 Aug. 2026 Another potential symptom is delirium tremens, a medical emergency involving extreme agitation, fever, racing heart, hyperthermia and cardiac instability. Khloe Quill, FOXNews.com, 30 July 2026 Symptoms of this condition include delirium, seizures, an abnormal heart rhythm, hyperthermia, coma and death. Andrew Yockey, The Conversation, 24 July 2026 The Webb County medical examiner suspected the deaths were caused by hyperthermia, or heat stroke. Los Angeles Times, 24 July 2026 See All Example Sentences for hyperthermia

Word History

Etymology

New Latin, from hyper- + therm- + -ia

First Known Use

1887, in the meaning defined above

Time Traveler
The first known use of hyperthermia was in 1887

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Cite this Entry

“Hyperthermia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperthermia. Accessed 25 Aug. 2026.

Medical Definition

hyperthermia

noun
1
: elevated temperature of the body (as that occurring in heatstroke) see malignant hyperthermia
2
: the artificial heating of all or part of the body (as in diathermy) for therapeutic purposes (as to treat cancer)

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