pannus

noun

1. Pathology.
   1. an abnormal vascular thickening of the cornea.
   2. an ingrowth of synovial material into a joint, as in rheumatoid arthritis.
2. Meteorology. a group of ragged cloud fragments hanging below a cloud.

noun

1. an inflammatory fleshy lesion on the surface of the eye

n. pl. pan•ni (păn′ī)

1. A membrane of granulation tissue covering the normal surface of the articular cartilages in rheumatoid arthritis.
2. A membrane of granulation tissue covering the normal surface of the cornea in trachoma.