Fictitious planet invented by modern sci-fi author Kurt Vonnegut, Jr.. In Slaughterhouse Five, hero Billy Pilgrim is taken to Tralfamadore, where he is put in a terrarium with a supermodel while being observed by aliens (who move around in four dimensional space like we move around in 3-d). In Vonnegut's recent novel Hocus Pocus, a story titled The Protocols of the Elders of Tralfamadore, by Kilgore Trout, is found in a back issue of a porno magazine.