xenocide

plural xenocides

1. countableuncountableThe killing of a stranger or foreigner.

   1 more example

   As notorious examples of ritual xenocide, suffice it to mention the foreigners sacrificed on the altar of the goddess Artemis in Colchis, on the eastern shore of the Black Sea (Diodorus Siculus, Bibliotheca Historica, 4.45) as well as the ritual of beheading strangers when the reaping season drew to a close, performed by the legendary Lityerses, king of Phyrgia. [...] [In] an act of ritual xenocide in a Cossack villafe [...] Cossacks kill a Turkish woman[.]

   2009, Andrei Oisteanu, Inventing the Jew: Antisemitic Stereotypes

2. countableuncountableliteratureThe genocide of an entire alien species.

   The age that began with one xenocide attempted had now ended with other xenocides prevented or, at least, postponed.

   1996, Orson Scott Card, Children of the Mind

3. UScolloquialcountableuncountableThe intentional killing of an entire foreign (plant or animal) species.