Where does “ὀνομάζω” come from?

ὀνομάζω (Ancient Greek) comes from Ancient Greek ὄνομα, from Proto-Indo-European h₁nómn̥, from Proto-Indo-European h₃neh₃- — to name.

ὀνομάζω (Ancient Greek): I speak of by name, address by name; I call one...