pannus

pan·nus

noun \ˈpan-əs\

plural pan·ni \ˈpan-ˌī\

Definition of PANNUS

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