demutualizePronunciation: /diːˈmjuːtʃʊəlʌɪz, -tjʊə-/ (also demutualise)Definition of demutualize verb [no object] (of a mutual organization such as a building society) change from being owned by its members to a different kind of ownership: both companies could demutualize over the next few yearsDerivatives demutualizationPronunciation: /-ˈzeɪʃ(ə)n/ noun demutualize in other Oxford dictionaries Definition of demutualize in the US English dictionary