plural panni
ˈpan-ˌī 
1
: a vascular tissue causing a superficial opacity of the cornea and occurring especially in trachoma
2
: a sheet of inflammatory granulation tissue that spreads from the synovial membrane and invades the joint in rheumatoid arthritis ultimately leading to fibrous ankylosis
Cite this Entry
“Pannus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/pannus. Accessed 31 Oct. 2025.
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