Deduction vs. Reduction - What's the difference?

Wiktionary

  • Deduction (noun)

    That which is deducted; that which is subtracted or removed

  • Deduction (noun)

    A written off

    "You might want to donate the old junk and just take the deduction."

  • Deduction (noun)

    A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.

    "induction"

  • Deduction (noun)

    A conclusion; that which is deduced, concluded or figured out

    "He arrived at the deduction that the butler didn't do it."

  • Deduction (noun)

    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."

  • Reduction (noun)

    The act, process, or result of reducing.

  • Reduction (noun)

    The amount or rate by which something is reduced, e.g. in price.

    "A 5% reduction in robberies"

  • Reduction (noun)

    A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.

  • Reduction (noun)

    The process of rapidly boiling a sauce to concentrate it.

  • Reduction (noun)

    The rewriting of an expression into a simpler form.

  • Reduction (noun)

    a transformation of one problem into another problem, such as mapping reduction or polynomial reduction.

  • Reduction (noun)

    An arrangement for a far smaller number of parties, e.g. a keyboard solo based on a full opera.

  • Reduction (noun)

    A philosophical procedure intended to reveal the objects of consciousness as pure phenomena. (See phenomenological reduction.)

  • Reduction (noun)

    A medical procedure to restore a fracture or dislocation to the correct alignment.

Oxford Dictionary

  • Deduction (noun)

    the action of deducting or subtracting something

    "the dividend will be paid without deduction of tax"

  • Deduction (noun)

    an amount that is or may be deducted from something, especially from taxable income or tax to be paid

    "tax deductions"

  • Deduction (noun)

    the inference of particular instances by reference to a general law or principle

    "we do not yet know if these deductions are correct"

    "the detective must uncover the murderer by deduction from facts"

  • Reduction (noun)

    the action or fact of making something smaller or less in amount, degree, or size

    "there had been a reduction in the number of casualties"

    "talks on arms reduction"

  • Reduction (noun)

    the amount by which something is made smaller, less, or lower in price

    "special reductions on knitwear"

  • Reduction (noun)

    the simplification of a subject or problem to a particular form in presentation or analysis

    "the reduction of classical genetics to molecular biology"

  • Reduction (noun)

    the process of converting an amount from one denomination to a smaller one, or of bringing down a fraction to its lowest terms.

  • Reduction (noun)

    the halving of the number of chromosomes per cell that occurs at one of the two anaphases of meiosis.

  • Reduction (noun)

    a thing that is made smaller or less in size or amount.

  • Reduction (noun)

    an arrangement of an orchestral score for piano or for a smaller group of performers.

  • Reduction (noun)

    a thick and concentrated liquid or sauce made by boiling.

  • Reduction (noun)

    a copy of a picture or photograph made on a smaller scale than the original.

  • Reduction (noun)

    the action of remedying a dislocation or fracture by returning the affected part of the body to its normal position

    "we must see if the fracture requires reduction"

  • Reduction (noun)

    the process or result of reducing or being reduced

    "the reaction is limited to reduction to the hydrocarbon"

  • Reduction (noun)

    substitution of a sound which requires less muscular effort to articulate

    "the process of vowel reduction"

Webster Dictionary

  • Deduction (noun)

    Act or process of deducing or inferring.

  • Deduction (noun)

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

  • Deduction (noun)

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

  • Deduction (noun)

    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.

  • Reduction (noun)

    The act of reducing, or state of being reduced; conversion to a given state or condition; diminution; conquest; as, the reduction of a body to powder; the reduction of things to order; the reduction of the expenses of government; the reduction of a rebellious province.

  • Reduction (noun)

    The act or process of reducing. See Reduce, v. t., 6. and To reduce an equation, To reduce an expression, under Reduce, v. t.

  • Reduction (noun)

    The correction of observations for known errors of instruments, etc.

  • Reduction (noun)

    The process of making a copy of something, as a figure, design, or draught, on a smaller scale, preserving the proper proportions.

  • Reduction (noun)

    The bringing of a syllogism in one of the so-called imperfect modes into a mode in the first figure.

  • Reduction (noun)

    The act, process, or result of reducing{7}; as, the reduction of iron from its ores; the reduction of an aldehyde into an alcohol.

  • Reduction (noun)

    The operation of restoring a dislocated or fractured part to its former place.

Princeton's WordNet

  • Deduction (noun)

    a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket

  • Deduction (noun)

    an amount or percentage deducted

  • Deduction (noun)

    something that is inferred (deduced or entailed or implied);

    "his resignation had political implications"

  • Deduction (noun)

    reasoning from the general to the particular (or from cause to effect)

  • Deduction (noun)

    the act of subtracting (removing a part from the whole);

    "he complained about the subtraction of money from their paychecks"

  • Deduction (noun)

    the act of reducing the selling price of merchandise

  • Reduction (noun)

    the act of decreasing or reducing something

  • Reduction (noun)

    any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent

  • Reduction (noun)

    the act of reducing complexity

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