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Definition of deduction noun from the Oxford Advanced Learner's Dictionary

deduction

noun
 
/dɪˈdʌkʃn/
 
/dɪˈdʌkʃn/
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  1. [uncountable, countable] the process of using information you have in order to understand a particular situation or to find the answer to a problem
    • He arrived at the solution by a simple process of deduction.
    • If my deductions are correct, I can tell you who the killer was.
    • We can examine the bones of dinosaurs and make deductions about how they lived.
    compare induction (3) see also deduce
    Extra Examples
    • She arrived at this conclusion by logical deduction.
    • a detective with excellent powers of deduction
    • We can make some deductions about the history of the ruins.
    Topics Maths and measurementb2
    Oxford Collocations Dictionaryadjective
    • brilliant
    • logical
    • reasonable
    verb + deduction
    • make
    preposition
    • by deduction
    • deduction about
    phrases
    • powers of deduction
    • a process of deduction
    See full entry
  2. [uncountable, countable] the process of taking an amount of something, especially money, away from a total; the amount that is taken away
    • The dividend will be paid without deduction of tax.
    • deduction from something deductions from your pay for tax and pension contributions
    • The company automatically makes tax deductions from your salary.
    Extra Examples
    • deductions for travel costs
    • monthly deductions for health insurance
    • You should claim the deduction when you file your tax return.
    Oxford Collocations Dictionaryadjective
    • monthly
    • weekly
    • tax
    verb + deduction
    • make
    • itemize
    • claim
    preposition
    • deduction for
    • deduction from
    See full entry
  3. Word Originlate Middle English: from Latin deductio(n-), from the verb deducere, from de- ‘down’ + ducere ‘lead’.
See deduction in the Oxford Advanced American DictionarySee deduction in the Oxford Learner's Dictionary of Academic English

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