SUBTRACTION

subtraction, deduction

(noun) the act of subtracting (removing a part from the whole); “he complained about the subtraction of money from their paychecks”

subtraction, minus

(noun) an arithmetic operation in which the difference between two numbers is calculated; “the subtraction of three from four leaves one”; “four minus three equals one”

Source: WordNet® 3.1

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Etymology

Noun

subtraction (countable and uncountable, plural subtractions)

(arithmetic, uncountable) The process of subtracting a number from another.

(arithmetic, countable) A calculation involving subtracting.

The removal of something.

Source: Wiktionary

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Sub*trac"tion, n. Etym: [L. subtractio a drawing back. See Subtract, and cf. Substraction.]

1. The act or operation of subtracting or taking away a part.

2. (Math.)

Definition: The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.

3. (Law)

Definition: The withdrawing or withholding from a person of some right to which he is entitled by law.

Note: Thus the subtraction of conjugal rights is when either the husband or wife withdraws from the other and lives separate without sufficient reason. The subtraction of a legacy is the withholding or detailing of it from the legatee by the executor. In like manner, the withholding of any service, rent, duty, or custom, is a subtraction, for which the law gives a remedy. Blackstone.

Source: Webster’s Unabridged Dictionary 1913 Edition

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