computation (n.)

c. 1400, "act, process, or method of arithmetical calculation," from Latin computationem (nominative computatio), noun of action from past participle stem of computare "to sum up, reckon, compute," from com "with, together" (see com-) + putare "to reckon," originally "to prune," from PIE root *pau- (2) "to cut, strike, stamp." From 1713 as "a result of computation, amount reckoned."

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