Subtraction

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

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.

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

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"