genticide

noun

1. (rare)The killing of a race or nation of people; the slaughter of an ethnic group; a genocide.

   “When we call unjust war murder, we give it too mild a name. It is wholesale murder; it is what might be denominated genticide, or the murder of nations.”

   “This cadaverous insistence upon our extinction is curdling my blood. Homicide! More than that — Genticide!”

2. (rare)The killing of a kinsman or kinswoman; the murder of a blood relative.

   “Thus the hatred of the kin group was the highest penalty for genticide or the murder of a clansman: […]”

   “[page 170] The term I shall employ is genticide, from the Latin gens meaning blood-relation or kin. […] [page 253] The metamorphosis of actual incest and genticide into astral saga was probably promoted by the savage belief that changes in weather and the aspects of the skies were somehow responses to their outrages of lust.”