xenograft /ˈzɛnəʊɡɹæft/noun 1verb 1forms 3 noun1 •A tissue graft taken from a species different from that of the recipient.Likewise the survival of xenografts of rat megaislets transplanted into miceis extended by these special pretransplant culture conditions. — 1982 verb1 •To perform a tissue graft using tissue taken from a species different from that of the recipient. formsxenografted · xenografting · xenografts