py·​rex·​ia | \ pī-ˈrek-sē-ə How to pronounce pyrexia (audio) \

Definition of pyrexia

: abnormal elevation of body temperature : fever

Other Words from pyrexia

pyrexial \ pī-​ˈrek-​sē-​əl How to pronounce pyrexia (audio) \ adjective
pyrexic \ pī-​ˈrek-​sik How to pronounce pyrexia (audio) \ adjective

Examples of pyrexia in a Sentence

Recent Examples on the Web These included injection site reactions, headache, pyrexia (fever), fatigue, back pain, myalgia and rash. Ananya Bhattacharya, Quartz, 22 Dec. 2021 According to the US National Library of Medicine's MedlinePlus resource, a fever (aka, pyrexia) is technically a higher-than-normal body temperature. Leah Groth,, 2 Apr. 2020 For many of these reactions, the FDA database uses medical terminology, such as pyrexia and dyspnoea for fever and labored breathing, respectively. Ajc Homepage, ajc, 24 July 2017

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

First Known Use of pyrexia

1777, in the meaning defined above

History and Etymology for pyrexia

New Latin, from Greek pyressein to be feverish, from pyretos

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The first known use of pyrexia was in 1777

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Cite this Entry

“Pyrexia.” Dictionary, Merriam-Webster, Accessed 8 Aug. 2022.

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More Definitions for pyrexia


py·​rex·​ia | \ pī-ˈrek-sē-ə How to pronounce pyrexia (audio) \

Medical Definition of pyrexia

: abnormal elevation of body temperature : fever

More from Merriam-Webster on pyrexia Encyclopedia article about pyrexia


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