# extractor

/ˈɛkstɹæktɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/extractor
Updated: 2026-05-30

## Definition

a tool or machine that pulls out a specific part or substance from something else. In math, it is a special function that finds the largest number in a group.

For teachers: a device or process used to remove a specific component or substance from a mixture. In mathematical contexts, it refers to a function that identifies the maximum element within a set or sequence.

## Examples

- The chef used a garlic extractor to get the juice out of the cloves.
- The software includes a data extractor that can pull specific names and addresses from a large database file.
- In formal logic, the extractor function serves as a critical component for identifying the supremum of a finite set, ensuring that the highest value is isolated for further analysis.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.