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# deduction

noun (a deduction, deductions; deduction, uncountable)

«deduction» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. An amount taken away from a total (a deduction from your pay). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#m1)
2. Working something out by reasoning from facts you know (Sherlock Holmes's deductions). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#m2)
3. A conclusion you reach that way. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#m3)

### In the lessons

In maths: deductions of money or points mean subtraction. In science and detective stories: deduction from clues; logical reasoning in maths proofs. Phrases: tax deduction, powers of deduction, by deduction.

### Examples

- After the deduction of tax, he got 300 pounds. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x1)
- The detective made a clever deduction from the muddy boots. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x2)
- By deduction, the missing number must be 7. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x3)
- There's a 5-point deduction for every mistake. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x4)
- Good scientists use deduction and evidence. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x5)
- Your deduction was correct! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/#x6)

### Note

Two meanings from two verbs: deduct (take away) and deduce (work out). In word problems, «a deduction of 20» means subtract 20.

## On Mova

- [Trees and pragmatics of «deduction» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/deduction/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«deduction» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/deduction.html) on Mova free.