urinary calculus n a calculus occurring in any portion of the urinary tract and esp. in the pelvis of the kidney called also urinary stone, urolith
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a calculus in any part of the urinary tract; vesical calculi are those lodged in the bladder and renal calculi are those in the renal pelvis. Common types named for their primary components are oxalate calculi, phosphate calculi, and uric acid calculi. Called also urolith.Medical dictionary. 2011.