subtraction

The act or process of subtracting; deduction.

The arithmetic operation of finding the difference between two quantities or numbers.

The act or operation of subtracting, or taking a part from a whole.

Specifically, in arithmetic and algebra, the taking of one number or quantity from another; the operation of finding the difference between two numbers.

In law, a withdrawing or neglecting, as when a person who owes any suit, duty, custom, or service to another withdraws it or neglects to perform it.