- 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 Oxford Collocations Dictionary adjectivebrilliant, logical, reasonable, … verb + deductionmake prepositionby deduction, deduction about phrasespowers of deduction, a process of deduction See full entry See related entries: Mathematical terminology
- 2[uncountable, countable] the process of taking an amount of something, especially money, away from a total; the amount that is taken away deductions from your pay for tax, etc. tax deductions Wordfinderpaybonus, commission, deduction, earn, overtime, pay, rise, salary, tax, wage Oxford Collocations Dictionary adjectivemonthly, weekly, tax, … verb + deductionmake, itemize, claim, … prepositiondeduction for, deduction from See full entry Word Originlate Middle English: from Latin deductio(n-), from the verb deducere, from de- ‘down’ + ducere ‘lead’.Extra examples She arrived at the solution by a simple process of deduction. She arrived at this conclusion by logical deduction. The company automatically makes tax deductions from your salary. We can make some deductions about the history of the ruins. You should claim the deduction when you file your tax return. a detective with excellent powers of deduction deductions for travel costs deductions from his wages monthly deductions for health insurance If my deductions are correct, I can tell you who the murderer is. deductions from your pay for tax and pension contributions
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