Calculatory

Calculatory is an adjective that denotes relation to calculation or to the act of computing. It may describe methods, instruments, or approaches that generate numerical results or estimates. The term is more often encountered in technical or formal writing and is generally considered somewhat archaic or specialized compared with more common terms such as computational or arithmetical.

Etymology: The word derives from Latin calculus, meaning pebble used for counting, and calculare, to reckon. The suffix -ary forms adjectives such as calculatory, calculational, and calculus-based uses in English.

Usage and examples: Calculatory methods include arithmetic operations, numerical analysis, and estimation procedures. Historically, calculatory devices include the abacus, slide rule, and mechanical calculators, which were designed to perform calculations. In modern contexts, 'calculatory' is sometimes used to describe cognitive processes involved in calculation, or to characterize software and algorithms whose primary function is to compute numerical results. In practice, 'computational' or 'calculation' are more common terms, whereas 'calculatory' emphasizes the act of calculating rather than the abstract notion of computation.

See also: Calculation, Calculator, Computational science, Numerical analysis, Arithmetic