Emily Dickinson Lexicon

CALC-U-LA'TION, n.

1. The art, practice or manner of computing by numbers. The use of numbers, by addition, subtraction, multiplication, or division, for the purpose of arriving at a certain result. Thus computations in astronomy and geometry for making tables of numbers are called calculations. – Encyc.
2. The result of an arithmetical operation; computation; reckoning. – Hooker.
3. Estimate formed in the mind by comparing the various circumstances and facts which influence its determination.