Noun: subtraction sub'trak-shun
- An arithmetic operation in which the difference between two numbers is calculated
"the subtraction of three from four leaves one";
- minus
- The act of subtracting (removing a part from the whole)
"he complained about the subtraction of money from their paychecks";
- deduction
Derived forms: subtractions
Type of: arithmetic operation, decrease, diminution, reduction, step-down
Encyclopedia: Subtraction