Home › Words › P › pyonephrosispyonephrosispyonephrosis · noun — an infection of the renal collecting system, in which pus collects in the renal pelvis and causes distension of the kidney.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom pyo- + nephrosis.nounAn infection of the renal collecting system, in which pus collects in the renal pelvis and causes distension of the kidney.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.pyelocystitis 69% match — Inflammation of the renal pelvis and the bladder. vs pyonephrosis →nephropyosis 67% match — Synonym of pyonephrosis. vs pyonephrosis →pyelostomy 67% match — The formation of an opening in the renal pelvis of a kidney. vs pyonephrosis →pyoperitoneum 66% match — An accumulation of pus in the peritoneal cavity. vs pyonephrosis →pyelectasis 65% match — A dilation of the renal pelvis. vs pyonephrosis →pyeloureteral 64% match — Relating to or connecting the renal pelvis of a kidney and the ureter vs pyonephrosis →hydronephrosis 64% match — distension of the kidneys due to obstruction in the flow of urine vs pyonephrosis →perinephritis 64% match — inflammation or infection of the cellular tissue around the kidney vs pyonephrosis →