Emily Dickinson Lexicon

calculation (-s), n. [L. calculā-re, count, reckon < calculus, a stone.]

Forecast; design; prognosis; formulation; reckoning; logarithm; computation; ascertainment; preparation; travel plan; estimation of circumstance; summing up of actions; adaptation of the means to the end; addition, subtraction, multiplication, and division; [fig.] hope; prospect; purpose; intention; determination; probability; thing one can count on.