organizationPronunciation: /ɔːg(ə)nʌɪˈzeɪʃ(ə)n/ (also organisation)Translate organization | into French | into German | into Italian | into Spanish Definition of organization noun 1an organized group of people with a particular purpose, such as a business or government department:a research organization 2 [mass noun] the action of organizing something:the organization of conferences the quality of being systematic and efficient:his lack of organization 3 [mass noun] the way in which the elements of a whole are arranged:the spatial organization of the cellsDerivatives organizational adjective organizationally adverb organization in other Oxford dictionaries Definition of organization in the US English dictionary