turbochargePronunciation: /ˈtəːbə(ʊ)tʃɑːʤ/Definition of turbocharge verb [with object] (often as adjective turbocharged) equip (an engine or vehicle) with a turbocharger:a turbocharged coupé make more powerful, fast, or exciting:turbocharged business growthturbocharge in other Oxford dictionaries Definition of turbocharge in the US English dictionary