: 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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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 In 2023, a 43-year-old homeless man named Efrain Hernandes died in Sacramento due to hyperthermia and heat stroke, according to the coroner’s office. Theresa Clift, Sacbee.com, 23 June 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 5 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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