[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/verifier/)

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# verifier

noun (a verifier, verifiers)

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

## Everyday

1. A person who checks that something is true, correct or real. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#m1)
2. (computing) A program or tool that checks automatically whether something is correct, such as a password, a document or the answer to a problem. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#m2)

### In the lessons

Used in computing, science and official work. A fact verifier checks facts in news stories; an age verifier checks how old someone is before they use a website. In maths and computing, a verifier checks a proof or an answer. It comes from "verify" (to check that something is true).

### Examples

- The verifier checked that the signature was real. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x1)
- A computer verifier checked all our answers in seconds. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x2)
- Fact verifiers make sure the news report is true. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x3)
- The website uses an age verifier before you can sign up. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x4)
- A proof verifier can check that each step of a maths proof follows the rules. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x5)
- The ticket verifier scanned my code at the gate. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/V/verifier/#x6)

### Note

Countable: a verifier, verifiers. Built from "verify" plus -er (y changes to i). Related words: verify, verification, verified. A verifier only checks; it does not create the answer.

## On Mova

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