downsizePronunciation: /ˈdaʊnsʌɪz/Translate downsize | into French | into German | into Italian Definition of downsize verb [with object] 1North American make (something) smaller:I downsized the rear wheel to 26 inches 2make (a company or organization) smaller by shedding staff: a TV news producer told what happened after her network downsized the newsroom [no object] (of a company) shed staff:recession forced many companies to downsizedownsize in other Oxford dictionaries Definition of downsize in the US English dictionary