Genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:
(a) Killing members of the group;
(b) Causing serious bodily or mental harm to members of the group;
(c) Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
(d) Imposing measures intended to prevent births within the group;
(e) Forcibly transferring children of the group to another group.
Convention on the Prevention and Punishment of the Crime of Genocide
Paris, 9 December 1948
Genocide is ANY ACT that puts the very existence of a group in jeopardy.
Henry Huttenbach (Locating the Holocaust on the genocide spectrum: towards a methodology of definition and categorization, Holocaust and Genocide Studies Vol 3, No 3, pp 289–303).