deduction

noun

1. 1

   That which is deducted; that which is subtracted or removed

2. 2

   A 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. 3

   A 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. 4

   A conclusion; that which is deduced, concluded or figured out

   “He arrived at the deduction that the butler didn't do it.”

5. 5

   The 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.”