RobertoG's comment is a good one, but I will add that the definition of genocide is defined in the genocide convention as:

Article 2 of the Convention defines genocide as:

    ... 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, Article 2[9]

I was sloppy in saying "partial genocide" as a colloquialism, because "partial genocide" is the crime of genocide full stop.