/
ˈkalkjʊləs/
n.
(pl. calculuses)
(also infinitesimal calculus)
the branch of mathematics concerned with the determination and properties of derivatives and integrals of functions, by methods based on the summation of infinitesimal differences. ▸a particular method or system of calculation or reasoning.
(pl. calculi
/-lʌɪ, -liː/
)
Medicine a concretion of minerals formed in the kidney, gall bladder, or other organ. ▸another term for tartar.
Etymology
C17: from L., lit. ‘small pebble’.
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