| nephrolith | <nephrology, urology> A renal calculus, gravel in a kidney. Origin: Gr. Lithos = stone (18 Nov 1997) |
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| nephrolithiasis | <nephrology, urology> The presence of calculi in the kidney or collecting system. The calculi are usually small (2-12mm) solid, crystalline, concretions that develop in the kidney and eventually pass through the genitourinary tract. Stones may be composed of calcium, phosphate or uric acid. (27 Sep 1997) |
| nephrolithic | <medicine> Of or pertaining to gravel, or renal calculi. Origin: Gr. A kidney + -lith + ic. Source: Websters Dictionary (01 Mar 1998) |
| nephrolithotomy | Incision into the kidney for the removal of a renal calculus. Origin: nephro-+ G. Lithos, stone, + tome, incision (05 Mar 2000) |