cal·cu·la·tion

[kal-kyuh-ley-shuhn]
noun
1.
the act or process of calculating; computation.
2.
the result or product of calculating: His calculations agree with ours.
3.
an estimate based on the known facts; forecast: Her calculation of the building costs proved quite accurate.
4.
forethought; prior or careful planning.
5.
scheming selfishness.

Origin:
1350–1400; Middle English < Late Latin calculātiōn- (stem of calculātiō reckoning). See calculate, -ion

cal·cu·la·tive [kal-kyuh-ley-tiv, ‐luh-tiv] , cal·cu·la·tion·al, cal·cu·la·to·ry [kal-kyuh-luh-tawr-ee, ‐tohr-ee] , adjective
non·cal·cu·la·tive, adjective
pre·cal·cu·la·tion, noun
un·cal·cu·la·tive, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To calculation
00:10
Calculation is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
calculation (ˌkælkjʊˈleɪʃən) [Click for IPA pronunciation guide]
 
n
1.  the act, process, or result of calculating
2.  an estimation of probability; forecast
3.  careful planning or forethought, esp for selfish motives

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

calculation
late 14c., from L.L. calculationem (nom. calculatio), from calculare "to reckon, compute," from L. calculus "reckoning, account," originally "pebble used in counting," dim. of calx (gen. calcis) "limestone" (see chalk).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Estimating the longer-term benefits to the country is a much woolier
  calculation.
The same calculation is being made now in cities across the country.
Now, though, there are signs that the cost-benefit calculation is shifting.
By contrast, the computer on your desk consumes a million times as much energy
  per calculation.
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