WORD ORIGIN noun 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. Origin of calculation 1350–1400; Middle English
Late Latin calculātiōn-
-ion Related forms cal·cu·la·tive , [ kal-ky uh-ley-tiv, ‐l uh-tiv] /ˈkæl kyəˌleɪ tɪv, ‐lə tɪv/ cal·cu·la·tion·al, cal·cu·la·to·ry , [ kal-ky uh-l uh-tawr-ee, ‐tohr-ee] /ˈkæl kyə ləˌtɔr i, ‐ˌtoʊr i/ adjective non·cal·cu·la·tive, adjective pre·cal·cu·la·tion, noun un·cal·cu·la·tive, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for calculatory noun the act, process, or result of calculating an estimation of probability; forecast careful planning or forethought, esp for selfish motives
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for calculatory n.
late 14c., from Late Latin
calculationem (nominative calculatio), noun of action from past participle stem of calculare "to reckon, compute," from Latin calculus "reckoning, account," originally "pebble used in counting," diminutive of calx (genitive calcis) "limestone" (see chalk (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper