deduction

n. subtraction, reduction, discount; conclusion; method of logical reasoning in which one uses a general rule to determine individual elements

Deduction can refer to one of the following usages:Deductive reasoning, inference in which the conclusion is of no greater generality than the premisesNatural deduction, an approach to proof theory that attempts to provide a formal model of logical reasoning as it "naturally" occursRelating to taxation:Itemized deductionsStandard deduction
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Noun
1. a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket
(synonym) tax write-off, tax deduction
(hypernym) write-off, write-down
(hyponym) tax benefit, tax break
2. an amount or percentage deducted
(synonym) discount
(hypernym) allowance, adjustment
(hyponym) trade discount
3. something that is inferred (deduced or entailed or implied); "his resignation had political implications"
(synonym) entailment, implication
(hypernym) inference, illation
4. reasoning from the general to the particular (or from cause to effect)
(synonym) deductive reasoning, synthesis
(hypernym) reasoning, logical thinking, abstract thought
(hyponym) syllogism
(derivation) deduce, infer, deduct, derive
5. the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks"
(synonym) subtraction
(hypernym) decrease, diminution, reduction, step-down
(hyponym) bite
(derivation) subtract, deduct, take off
6. the act of reducing the selling price of merchandise
(synonym) discount, price reduction
(hypernym) decrease, diminution, reduction, step-down

n. deduction, inference, conclusion

(n.)
That which is deducted; the part taken away; abatement; as, a deduction from the yearly rent.
  

(n.)
That which is deduced or drawn from premises by a process of reasoning; an inference; a conclusion.
  

(n.)
Act or process of deducing or inferring.
  

(n.)
Act of deducting or taking away; subtraction; as, the deduction of the subtrahend from the minuend.