CALCULATION

, the act of computing several sums, by adding, subtracting, multiplying, dividing, &c. From calculus, in allusion to the practice of the ancients, who used calculi, or little stoues, in making computations, in taking suffrages, and in keeping accounts, &c; as we now use counters, figures, &c. Calculation is more particularly used to signify the computations in astronomy, trigonometry, &c, for making tables of astronomy, of logarithms, ephemerides, finding the times of eclipses, and such like.