/ ˌkælkjuˈleɪʃn; NAmE / noun
1.
[ C , U ] the act or process of using numbers to find out an amount :
Cathy did a rough calculation.
By my calculation(s), we made a profit of £20 000 last year.
Our guess was confirmed by calculation.
2.
[ C , U ] the process of using your judgement to decide what the results would be of doing sth
3.
[ U ] ( disapproving ) careful planning for yourself without caring about other people :
an act of cold calculation
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WORD ORIGIN
late Middle English : via Old French from late Latin calculatio(n-) , from the verb calculare , from calculus a small pebble (as used on an abacus).