af·​ter·​cool·​er | \ ˈaf-tər-ˌkü-lər\

Definition of aftercooler

1 : an apparatus for cooling the discharge air from air compressors in order to remove its condensed moisture
2 : a device for cooling the fuel mixture heated by compression in a supercharger

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First Known Use of aftercooler

1895, in the meaning defined at sense 1

History and Etymology for aftercooler

after- + cooler entry 2

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The first known use of aftercooler was in 1895

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