From Latin 'calculus' (counting pebble) — Leibniz adopted the word for his mathematics of continuous change in the 1680s.
The branch of mathematics concerned with continuous change, comprising differential and integral calculus; (medicine) a hard mass formed in the body, especially in the kidney or gallbladder.
From Latin 'calculus' (a small stone used in reckoning, a pebble), diminutive of 'calx' (limestone). Gottfried Wilhelm Leibniz adopted the term 'calculus' for his new mathematical method in the 1680s, drawing on the Latin word's long association with computation. The medical sense — a stone formed inside the body — preserves the original Latin meaning
Leibniz and Newton independently invented calculus in the 1680s, igniting one of the most bitter priority disputes in the history of science. Leibniz published first (1684) and chose the name 'calculus,' while Newton called his version 'the method of fluxions.' Leibniz's name won out — and his notation (dy/dx, the integral sign ∫) became standard — partly because
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