xenoencyclopedia /zɛnəɪnˌsaɪ.kləˈpi(ː).di.ə/ noun1 •(rare) An encyclopedia of science fiction.The competent reader gradually learns more and more about the genre's own grand-scale xenoencyclopedia in order to understand each new work's specific xenoencyclopedia... — 2012 formsxenoencyclopedias