Xenocide

Xenocide (1991) is a science fiction novel by American writer Orson Scott Card, the third book in the Ender's Game series. It was nominated for both the Hugo and Locus Awards for Best Novel in 1992. The title is a combination of 'xeno-', meaning alien, and '-cide', referring to the act of killing, together meaning the act of killing populations of aliens; comparable to genocide.