deduction

ot noun

1. 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.
2. A conclusion; that which is deduced, concluded or figured out He arrived at the deduction that the butler didn't do it.
3. 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.
4. That which is deducted; that which is subtracted or removed