urinary calculus

from WordNet (r) 3.0 (2006)
urinary calculus
    n 1: a calculus formed in the kidney [syn: {kidney stone},
         {urinary calculus}, {nephrolith}, {renal calculus}]
    
from The Collaborative International Dictionary of English v.0.48
Urinary \U"ri*na*ry\, a. [L. urina urine: cf. F. urinaire.]
   [1913 Webster]
   1. Of or pertaining to the urine; as, the urinary bladder;
      urinary excretions.
      [1913 Webster]

   2. Resembling, or being of the nature of, urine.
      [1913 Webster]

   {Urinary calculus} (Med.), a concretion composed of some one
      or more crystalline constituents of the urine, liable to
      be found in any portion of the urinary passages or in the
      pelvis of the kidney.

   {Urinary pigments}, (Physiol. Chem.), certain colored
      substances, urochrome, or urobilin, uroerythrin, etc.,
      present in the urine together with indican, a colorless
      substance which by oxidation is convertible into colored
      bodies.
      [1913 Webster]
    

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