deduction

[ dih-duhk-shuhn ]

/ dɪˈdʌk ʃən /

SEE SYNONYMS FOR deduction ON THESAURUS.COM

noun

the act or process of deducting; subtraction.

something that is or may be deducted: She took deductions for a home office and other business expenses from her taxes.

the act or process of deducing.

something that is deduced: His astute deduction was worthy of Sherlock Holmes.

Logic.

a process of reasoning in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.
a conclusion reached by this process.Compare induction (def. 4).

Origin of deduction

1400–50; late Middle English deduccioun (<Anglo-French ) <Latin dēductiōn- (stem of dēductiō) a leading away. See deduct, -ion

OTHER WORDS FROM deduction

non·de·duc·tion, nounpre·de·duc·tion, noun

WORDS THAT MAY BE CONFUSED WITH deduction

deduction , extrapolation, induction, generalization, hypothesis

Words nearby deduction

dedolomitize, deduce, deduct, deductible, deductible clause, deduction, deduction theorem, deductive, deduplicate, de Duve, dee

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for deduction

If you squeeze the last drop of deduction from the puzzle conditions, you won’t have too many trial-and–error candidates to search through.
Celebrating the Playful Magic of John Horton Conway|Pradeep Mutalik|October 15, 2020|Quanta Magazine
In addition, the TCJA gives individuals several tax breaks—an increased child tax credit and standard deduction, for example—that are scheduled to expire at the end of 2025.
What business needs from the 2020 election|Geoffrey Colvin|September 30, 2020|Fortune
True, making an Item 24 deduction requires me to “Attach Form 2106.”
Up to a Point: I Do My Own Taxes With No Help, Except From a Couple of Bloody Marys|P. J. O’Rourke|April 15, 2014|DAILY BEAST
But it would represent a deduction of nearly 20 percent from fiscal 2012.
The Sequester Is Proof that Washington Thinks We Are All Idiots|Daniel Gross|March 14, 2013|DAILY BEAST

Master of deduction Sherlock refuses to put together the evidence that his girlfriend Alyssa is cheating on him.
This Week’s Hot Reads: Jan. 28, 2013|Mythili Rao, David Goodwillie|January 29, 2013|DAILY BEAST
National Review's editors would rather end the deduction for state and local taxes than increase rates.
End the Deduction for State and Local Taxes|Justin Green|December 14, 2012|DAILY BEAST
The deduction for state and local taxes does not much interest Texans.
The Fiscal Cliff's Upper Class Battle|David Frum|December 4, 2012|DAILY BEAST
The deduction cannot be legitimately drawn until the possibility of any other cause of specific modification has been excluded.
Darwin, and After Darwin, Volume II (of 3)|George John Romanes
Why, Mary Louise, in this deduction we have all the necessary elements of the usual crime.
Mary Louise Solves a Mystery|L. Frank Baum
We do criticise individual cases very freely, yet make no deduction from our own wide observations.
Concerning Children|Charlotte Perkins Gilman
They are finding out things by experimentation or thought; by induction or deduction.
A Librarian's Open Shelf|Arthur E. Bostwick
From this the deduction is easy that greatness depends on the possession of formidable military power.
Armageddon--And After|W. L. Courtney

British Dictionary definitions for deduction

deduction

/ (dɪˈdʌkʃən) /

noun

the act or process of deducting or subtracting

something, esp a sum of money, that is or may be deducted

the process of reasoning typical of mathematics and logic, whose conclusions follow necessarily from their premises
an argument of this type
the conclusion of such an argument

logic

a systematic method of deriving conclusions that cannot be false when the premises are true, esp one amenable to formalization and study by the science of logic
an argument of this typeCompare induction (def. 4)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for deduction (1 of 2)

deduction

A process of reasoning that moves from the general to the specific. (Compare induction.)

Cultural definitions for deduction (2 of 2)

deduction

A cost or expense subtracted from revenue, usually for tax purposes.

Scientific definitions for deduction

deduction

[ dĭ-dŭk′shən ]

The process of reasoning from the general to the specific, in which a conclusion follows necessarily from the premises.

A conclusion reached by this process.

Usage

The logical processes known as deduction and induction work in opposite ways. In deduction general principles are applied to specific instances. Thus, using a mathematical formula to figure the volume of air that can be contained in a gymnasium is applying deduction. Similarly, applying a law of physics to predict the outcome of an experiment is reasoning by deduction. By contrast, induction makes generalizations based on a number of specific instances. The observation of hundreds of examples in which a certain chemical kills plants might prompt the inductive conclusion that the chemical is toxic to all plants. Inductive generalizations are often revised as more examples are studied and more facts are known. If certain plants that have not been tested turn out to be unaffected by the chemical, the conclusion about the chemical's toxicity must be revised or restricted. In this way, an inductive generalization is much like a hypothesis.

单词	deduction
释义	deduction [ dih-duhk-shuhn ] / dɪˈdʌk ʃən / SEE SYNONYMS FOR deduction ON THESAURUS.COM noun the act or process of deducting; subtraction. something that is or may be deducted: She took deductions for a home office and other business expenses from her taxes. the act or process of deducing. something that is deduced: His astute deduction was worthy of Sherlock Holmes. Logic. a process of reasoning in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true. a conclusion reached by this process.Compare induction (def. 4). Origin of deduction 1400–50; late Middle English deduccioun (<Anglo-French ) <Latin dēductiōn- (stem of dēductiō) a leading away. See deduct, -ion OTHER WORDS FROM deduction non·de·duc·tion, nounpre·de·duc·tion, noun WORDS THAT MAY BE CONFUSED WITH deduction deduction , extrapolation, induction, generalization, hypothesis Words nearby deduction dedolomitize, deduce, deduct, deductible, deductible clause, deduction, deduction theorem, deductive, deduplicate, de Duve, dee Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for deduction If you squeeze the last drop of deduction from the puzzle conditions, you won’t have too many trial-and–error candidates to search through. Celebrating the Playful Magic of John Horton Conway\|Pradeep Mutalik\|October 15, 2020\|Quanta Magazine In addition, the TCJA gives individuals several tax breaks—an increased child tax credit and standard deduction, for example—that are scheduled to expire at the end of 2025. What business needs from the 2020 election\|Geoffrey Colvin\|September 30, 2020\|Fortune True, making an Item 24 deduction requires me to “Attach Form 2106.” Up to a Point: I Do My Own Taxes With No Help, Except From a Couple of Bloody Marys\|P. J. O’Rourke\|April 15, 2014\|DAILY BEAST But it would represent a deduction of nearly 20 percent from fiscal 2012. The Sequester Is Proof that Washington Thinks We Are All Idiots\|Daniel Gross\|March 14, 2013\|DAILY BEAST Master of deduction Sherlock refuses to put together the evidence that his girlfriend Alyssa is cheating on him. This Week’s Hot Reads: Jan. 28, 2013\|Mythili Rao, David Goodwillie\|January 29, 2013\|DAILY BEAST National Review's editors would rather end the deduction for state and local taxes than increase rates. End the Deduction for State and Local Taxes\|Justin Green\|December 14, 2012\|DAILY BEAST The deduction for state and local taxes does not much interest Texans. The Fiscal Cliff's Upper Class Battle\|David Frum\|December 4, 2012\|DAILY BEAST The deduction cannot be legitimately drawn until the possibility of any other cause of specific modification has been excluded. Darwin, and After Darwin, Volume II (of 3)\|George John Romanes Why, Mary Louise, in this deduction we have all the necessary elements of the usual crime. Mary Louise Solves a Mystery\|L. Frank Baum We do criticise individual cases very freely, yet make no deduction from our own wide observations. Concerning Children\|Charlotte Perkins Gilman They are finding out things by experimentation or thought; by induction or deduction. A Librarian's Open Shelf\|Arthur E. Bostwick From this the deduction is easy that greatness depends on the possession of formidable military power. Armageddon--And After\|W. L. Courtney British Dictionary definitions for deduction deduction / (dɪˈdʌkʃən) / noun the act or process of deducting or subtracting something, esp a sum of money, that is or may be deducted the process of reasoning typical of mathematics and logic, whose conclusions follow necessarily from their premises an argument of this type the conclusion of such an argument logic a systematic method of deriving conclusions that cannot be false when the premises are true, esp one amenable to formalization and study by the science of logic an argument of this typeCompare induction (def. 4) Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Content related to deduction Tax Words To Learn Right Now (As In Today)Tax season is universally loathed. To help make this process a little less dreadful, we've broken down some of the US tax lingo you're likely to encounter. READ MORE Words related to deduction discount, abatement, rebate, credit, reduction, allowance, write-off, inference, deliberation, result, meditation, reasoning, thinking, ratiocination, rumination, assumption, answer, finding, corollary, musing Cultural definitions for deduction (1 of 2) deduction A process of reasoning that moves from the general to the specific. (Compare induction.) Cultural definitions for deduction (2 of 2) deduction A cost or expense subtracted from revenue, usually for tax purposes. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for deduction deduction [ dĭ-dŭk′shən ] The process of reasoning from the general to the specific, in which a conclusion follows necessarily from the premises. A conclusion reached by this process. Usage The logical processes known as deduction and induction work in opposite ways. In deduction general principles are applied to specific instances. Thus, using a mathematical formula to figure the volume of air that can be contained in a gymnasium is applying deduction. Similarly, applying a law of physics to predict the outcome of an experiment is reasoning by deduction. By contrast, induction makes generalizations based on a number of specific instances. The observation of hundreds of examples in which a certain chemical kills plants might prompt the inductive conclusion that the chemical is toxic to all plants. Inductive generalizations are often revised as more examples are studied and more facts are known. If certain plants that have not been tested turn out to be unaffected by the chemical, the conclusion about the chemical's toxicity must be revised or restricted. In this way, an inductive generalization is much like a hypothesis. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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deduction

noun

Origin of deduction

OTHER WORDS FROM deduction

WORDS THAT MAY BE CONFUSED WITH deduction

Words nearby deduction

Example sentences from the Web for deduction

British Dictionary definitions for deduction

noun

Content related to deduction

Words related to deduction

Cultural definitions for deduction (1 of 2)

Cultural definitions for deduction (2 of 2)

Scientific definitions for deduction

Usage