exchanger
n. B2 Upper Intermediate US //ɪksˈtʃeɪndʒɝ// UK //ɛkstʃˈeɪndʒɐ// ex·chang·er
n. a person or machine that changes one thing into another. You often hear this word when talking about money, heat, or gases.
n. a person or device that facilitates the exchange of one substance, currency, or form of energy for another.
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.