Robert A. Freitas, Jr.

xenocidal adj.	1979 R. A. Freitas, Jr. Illegal Aliens in Omni Nov. 110/3 Stiffer sentences might be appropriate for xenocidal acts committed against longer-lived or more highly intelligent or sensitive species.
xenocide n.	1979 R. A. Freitas, Jr. Illegal Aliens in Omni Nov. 108/2 Lawmakers should define the crime of xenocide—the slaying of an extraterrestrial person by any other legal person. Xenocide could be committed with or without malice, intentionally, negligently, or accidentally.
xenopsychology n.	1984 R. A. Freitas in Analog Science Fiction/Science Fact Apr. 41 (title) Xenopsychology.