Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “deduction”

See all translations

deduction

noun uk   /dɪˈdʌk.ʃən/ us  

deduction noun (THINKING)

C2 [C or U] the process of reaching a decision or answer by thinking about the known facts, or the decision that is reached: Through a process of deduction, the detectives discovered the identity of the killer. All we can do is make deductions from the available facts.

deduction noun (TAKING AWAY)

C1 [C or U] the calculation of taking an amount or a part of something away from a total or the amount that is taken away: The interest I receive on my savings account is paid after the deduction of tax. [C] US and Australian English ( UK stoppage) an amount that is taken away from the money you are paid before you officially receive it: After deductions, his taxable income is $30,000.
(Definition of deduction from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of deduction?
Add Cambridge dictionaries to your browser to your website

Definitions of “deduction” in other dictionaries

Word of the Day

piglet

a baby pig

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More