Origin and Etymology of pyelonephritis
First Known Use: 1839
Medical Definition of pyelonephritis
: inflammation of both the parenchyma of a kidney and the lining of its renal pelvis especially due to bacterial infection
Learn More about pyelonephritis
Britannica.com: Encyclopedia article about pyelonephritis
Seen and Heard
What made you want to look up pyelonephritis? Please tell us where you read or heard it (including the quote, if possible).