# exchanger

/ɪksˈtʃeɪndʒɝ/ (US) · /ɛkstʃˈeɪndʒɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/exchanger
Updated: 2026-05-20

## Definition

a person or machine that changes one thing into another. You often hear this word when talking about money, heat, or gases.

For teachers: a person or device that facilitates the exchange of one substance, currency, or form of energy for another.

## Examples

- The heat exchanger keeps the engine from overheating.
- The currency exchanger at the airport offers the best rates for travelers who need to convert their cash.
- In industrial settings, a gas exchanger is essential for maintaining the chemical balance within a reactor by allowing specific compounds to pass through a membrane while retaining others.

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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.