/ Dictionary / Index C calculation: Meaning and Definition of Find definitions for: cal•cu•la•tion Pronunciation: (kal"kyu-lā'shun), [key] — n. the act or process of calculating; computation. the result or product of calculating: His calculations agree with ours. an estimate based on the known facts; forecast: Her calculation of the building costs proved quite accurate. forethought; prior or careful planning. scheming selfishness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: calculation (Thesaurus) calculating machine calculator Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language