definition of
deduction

[1] #1 deduction n. [tax write-off, tax deduction] a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket. wn

[2] #2 deduction n. [discount] an amount or percentage deducted. wn

[3] #3 deduction n. [entailment, implication] something that is inferred (deduced or entailed or implied); "his resignation had political implications". wn

[4] #4 deduction n. [deductive reasoning, synthesis] reasoning from the general to the particular (or from cause to effect). wn

[5] #5 deduction n. [subtraction] the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks". wn