A mechanical or electronic device that automatically changes something, such as a CD changer that plays multiple discs without manual intervention.
From auto- (self) + changer (from change + -er, one who or that which changes). A 20th-century compound describing automated mechanical substitution.
CD autochanger technology was super cool in the 1990s—the idea that your car stereo could hold six CDs and flip through them automatically felt like the future!
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