Definitions
1.nounThat which is deducted; that which is subtracted or removed
2.nounA sum that can be removed from tax calculations; something that is written off"You might want to donate the old junk and just take the deduction."
3.nounA process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.
4.nounA conclusion; that which is deduced, concluded or figured out"He arrived at the deduction that the butler didn't do it."
5.nounThe ability or skill to deduce or figure out; the power of reason"Through his powers of deduction, he realized that the plan would never work."