in·​tra·​per·​i·​to·​ne·​al ˌin-trə-ˌper-ə-tə-ˈnē-əl How to pronounce intraperitoneal (audio)
: existing within or administered by entry into the peritoneum
intraperitoneal chemotherapy
intraperitoneally adverb

Examples of intraperitoneal in a Sentence

Recent Examples on the Web The results showed that one week of intraperitoneal thymosin beta-4 injections reduced markers of liver injury and prevented changes in liver pathology. The Salt Lake Tribune, 16 Aug. 2023 Bothrops asper, the most notorious of the genus known by the common name fer-de-lance, has an intraperitoneal LD50 of 0.469 mg/kg — certainly stronger than C. greeningi, though admittedly half the strength of A. brunoi. Christie Wilcox, Discover Magazine, 7 Aug. 2015 Oxyuranus scutellatus, the coastal taipan, has an intraperitoneal LD50 of 0.009 mg/kg, and can be milked for almost 900 mg of that venom in one sitting! Christie Wilcox, Discover Magazine, 7 Aug. 2015 Not only would this be more acceptable to and comfortable for patients, especially children, than intravenous, intraperitoneal and subcutaneous routes. Philip W. Askenase, Scientific American, 17 June 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'intraperitoneal.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1836, in the meaning defined above

Time Traveler
The first known use of intraperitoneal was circa 1836

Dictionary Entries Near intraperitoneal

Cite this Entry

“Intraperitoneal.” Dictionary, Merriam-Webster, Accessed 14 Jun. 2024.

Medical Definition


in·​tra·​per·​i·​to·​ne·​al ˌin-trə-ˌper-ət-ᵊn-ˈē-əl How to pronounce intraperitoneal (audio)
: situated within or administered by entering the peritoneum
intraperitoneally adverb
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