deproteinize Syllabification: (de·pro·tein·ize)Pronunciation: /dēˈprōtē(ə)ˌnīz/Definition of deproteinize verb [with object] remove the protein from (a substance), usually as a stage in chemical purification. Derivatives deproteinizationPronunciation: /-ˌprōtē(ə)nəˈzāSHən/ noun deproteinize in other Oxford dictionaries Definition of deproteinize in the British & World English dictionary