xenotransplantationPronunciation: /ˌzɛnə(ʊ)ˌtransplɑːnˈteɪʃ(ə)n, -ˌtrɑːns-, -nz-/Definition of xenotransplantation noun [mass noun] the process of grafting or transplanting organs or tissues between members of different species. Derivatives xenotransplant noun xenotransplantation in other Oxford dictionaries Definition of xenotransplantation in the US English dictionary