-onymy

From international scientific vocabulary, reflecting the New Latin combining form -ōnymia, from -ōnymos (“-onymous”) [from Ancient Greek -ώνυμος (-ṓnumos), from ὄνυμα (ónuma, “name”) +‎ -ος (-os, suffix forming compound adjectives)] +‎ -ia; compare also ὄνομα § Derived terms.