de·duc·tion /dɪˈdʌkʃən, di-/
  減除,扣除,減除額,推論
  deduction
  扣除
  deduction
  演繹 扣除
  De·duc·tion n.
  1. Act or process of deducing or inferring.
     The deduction of one language from another.   --Johnson.
     This process, by which from two statements we deduce a third, is called deduction.   --J. R. Seely.
  2. Act of deducting or taking away; subtraction; as, the deduction of the subtrahend from the minuend.
  3. That which is deduced or drawn from premises by a process of reasoning; an inference; a conclusion.
     Make fair deductions; see to what they mount.   --Pope.
  4. That which is or may be deducted; the part taken away; abatement; as, a deduction from the yearly rent in compensation for services; deductions from income in calculating income taxes.
  Syn: -- See Induction.
  ◄ ►
  deduction
       n 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 [syn: tax write-off, tax
            deduction]
       2: an amount or percentage deducted [syn: discount]
       3: something that is inferred (deduced or entailed or implied);
          "his resignation had political implications" [syn: entailment,
           implication]
       4: reasoning from the general to the particular (or from cause
          to effect) [syn: deductive reasoning, synthesis]
       5: the act of subtracting (removing a part from the whole); "he
          complained about the subtraction of money from their
          paychecks" [syn: subtraction] [ant: addition]
       6: the act of reducing the selling price of merchandise [syn: discount,
           price reduction]