【医】 pyelovenous backflow
【医】 pelvis; pelvis of ureter; pyel-; pyelo-; renal pelvis; venter renum
vein
【医】 phleb-; phlebo-; vena; venae; veno-; venovenostomy
circumfluence; refluence
【化】 back flow; circulation reflux; contra-flow; flow-back; reflux
refluxing
【医】 backflow; palirrhea; reflux reflextonus; refluxing; regurgitation
return; return current