deduction in WordNet English dictionary

1. the act of subtracting (removing a part from the whole)
   "he complained about the subtraction of money from their paychecks"
   subtraction  deduction 
   
2. the act of reducing the selling price of merchandise
   discount  price reduction  deduction 
   
3. reasoning from the general to the particular (or from cause to effect)
   deduction  deductive reasoning  synthesis 
   
4. something that is inferred (deduced or entailed or implied)
   "his resignation had political implications"
   deduction  entailment  implication 
   
5. an amount or percentage deducted
   deduction  discount 
   
6. a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket
   tax write-off  tax deduction  deduction