perinephritis

from The Collaborative International Dictionary of English v.0.48

Perinephritis \Per`i*ne*phri"tis\, n. [NL. See {Peri-}, and
   {Nephritis}.] (Med.)
   Inflammation of the cellular tissue around the kidney. --
   {Per`i*ne*phrit"ic}, a.
   [1913 Webster]