perithelium

noun

peri·​the·​li·​um -ˈthē-lē-əm How to pronounce perithelium (audio)
plural perithelia -lē-ə How to pronounce perithelium (audio)
: a layer of connective tissue surrounding a small vessel (as a capillary)

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perithelioma
perithelium
peritonaeum
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Cite this Entry

“Perithelium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/perithelium. Accessed 26 Oct. 2025.

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