empyema

noun

em·​py·​ema ˌem-ˌpī-ˈē-mə How to pronounce empyema (audio)
plural empyemata ˌem-ˌpī-ˈē-mə-tə How to pronounce empyema (audio) or empyemas
: the presence of pus in a bodily cavity
empyemic adjective

Examples of empyema 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.
Francis had died of empyema, a condition of the lungs that is often associated with pneumonia. Claire Healy, Washington Post, 14 Dec. 2023 Pediatric intracranial infections investigated by the CDC – which include pus pooling in abscesses or empyemas around the brain – are a very rare but serious complication that has been seen from Streptococcus bacteria. Alexander Tin, CBS News, 1 June 2023 There were three cases of empyema at The Children’s Hospital at Westmead in both December 2017 and December 2018; in December 2019, there were six. Annabelle Timsit, Quartz, 14 Jan. 2020 Other symptoms of a subdural empyema include headaches and lethargy. Sandra G. Boodman, chicagotribune.com, 19 Dec. 2017

Word History

Etymology

Late Latin, from Greek empyēma, from empyein to suppurate, from em- en- entry 2 + pyon pus — more at foul entry 1

First Known Use

circa 1605, in the meaning defined above

Time Traveler
The first known use of empyema was circa 1605

Browse Nearby Words

Cite this Entry

“Empyema.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/empyema. Accessed 9 Sep. 2025.

Medical Definition

empyema

noun
em·​py·​ema ˌem-ˌpī-ˈē-mə How to pronounce empyema (audio)
plural empyemata -mət-ə How to pronounce empyema (audio) also empyemas
: the presence of pus in a bodily cavity (as the pleural cavity)

called also pyothorax

empyemic adjective

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