Deduction definition

dĭ-dŭkshən
Frequency:
A deduction is defined as when something, especially money, is taken away.

An example of a deduction is what is taken out of your payroll check for income taxes.

noun
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The act of deducting; subtraction.
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The process of reasoning from the general to the specific, in which a conclusion follows necessarily from the premises.
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The process of reasoning in which a conclusion follows necessarily from the stated premises; inference by reasoning from the general to the specific.
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(logic) 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.
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An amount that is or may be deducted.

Tax deductions.

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The definition of a deduction is the act of understanding something based on evidence.

An example of a deduction is what a detective makes after he compares and interprets the details of an investigation.

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A conclusion reached by this process.
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A deducting or being deducted; subtraction.
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(logic) The act or process of deducing; reasoning from the general to the specific, or from premises to a logically valid conclusion; also, a conclusion reached by such reasoning.
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A sum or amount deducted or allowed to be deducted as, specif., from taxable income.
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Something for which such an amount may be deducted from taxable income.
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A conclusion reached by this process.
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An expense, such as state and local taxes paid, or annual interest on a mortgage, that is listed on a tax return as a deduction. Includes charitable deductions.
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A monetary amount that a taxpayer is permitted by law or regulation to subtract from income when determining income tax.
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A dollar amount that a taxpayer is permitted by law to subtract from taxable income in lieu of listing itemized deductions.
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That which is deducted; that which is subtracted or removed.
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A sum that can be removed from tax calculations; something that is written off.

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

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

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

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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.

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A conclusion reached by this process.
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The drawing of a conclusion by reasoning; the act of deducing.
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An expense that is subtracted from taxable income in order to reduce the amount of income tax that has to be paid. Charitable donations and business expenses, such as entertainment expenses and office supplies, are examples of items that can be deducted.
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Other Word Forms

Noun

Singular:
deduction
Plural:
deductions

Origin of deduction

  • From Middle French déduction, from Latin deductio

    From Wiktionary