replacementPronunciation: /rɪˈpleɪsm(ə)nt/Translate replacement | into French | into German | into Italian | into Spanish Definition of replacement noun [mass noun] the action or process of replacing someone or something:the replacement of religion by poetry [count noun]:a hip replacement a person or thing that takes the place of another: please stay until we find a replacement for youreplacement in other Oxford dictionaries Definition of replacement in the US English dictionary