posterize Syllabification: (post·er·ize)Pronunciation: /ˈpōstəˌrīz/Definition of posterize verb [with object] print or display (a photograph or other image) using only a small number of different tones. Derivatives posterizationPronunciation: /ˌpōstərəˈzāSHən/ noun posterize in other Oxford dictionaries Definition of posterize in the British & World English dictionary