decolonizePronunciation: /diːˈkɒlənʌɪz/ (also decolonise)Definition of decolonize verb [with object] (of a state) withdraw from (a colony), leaving it independent:Spain seemed in no hurry to decolonize those landsDerivatives decolonizationPronunciation: /-ˈzeɪʃ(ə)n/ noun decolonize in other Oxford dictionaries Definition of decolonize in the US English dictionary