[li-thahy-uh-sis] /lɪˈθaɪ ə sɪs/

noun, Pathology.
the formation or presence of stony concretions, as calculi, in the body.
(pathol) the formation of a calculus

lithiasis li·thi·a·sis (lĭ-thī’ə-sĭs)
n. pl. li·thi·a·ses (-sēz’)
The formation of calculi of any kind, especially biliary or urinary calculi.


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