renal calculus

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WORDNET DICTIONARY

Noun renal calculus has 1 sense

renal calculus(n = noun.object) kidney stone, nephrolith, urinary calculus - a calculus formed in the kidney;

is a kind of calculus, concretion

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CIDE DICTIONARY

renal calculus,

an abnormal concretion formed in the excretory passages of the kidney, composed primarily of calcium oxalates and phosphates; -- also called kidney stone, nephrolith, and nephritic calculus (an obsolete term). [PJC]