1. [ noun ] (geology) a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
Synonyms: concretion

"renal calculi can be very painful"

Related terms: rock gallstone urolith sialolith enterolith ptyalith kidney_stone bladder_stone
2. [ noun ] (zoology) an incrustation that forms on the teeth and gums
Synonyms: tophus tartar
Related terms: crust
3. [ noun ] (mathematics) the branch of mathematics that is concerned with limits and with the differentiation and integration of functions
Synonyms: infinitesimal_calculus the_calculus
Related terms: pure_mathematics differential_calculus analysis integral_calculus calculus_of_variations mathematics
Similar spelling:   calyculus