The story
From cysto- (“urinary bladder”) + uretero- (“ureter”) + pyelo- (“renal pelvis”) + nephritis (“inflammation of the kidney”).
Etymology from Wiktionary, CC BY-SA 4.0.
cystoureteropyelonephritis
Today it means: A medical condition involving inflammation or infection of the bladder, ureter, and kidney, usually caused by bacteria and occurring as a result of a urinary tract infection that spreads to the upper urinary tract. Full definition →