1 -onymy | Definition of -onymy
-on·​y·​my | \ ˈänəmē, -mi\
plural -es

Definition of -onymy

1 : kind of name or word : kind or set of names or words hydronymy
2 : study of a (specified) kind of names or words anthroponymy

History and Etymology for -onymy

Latin -onymia, from Greek -ōnymia, from -ōnymos (as in homōnymos) + -ia -y

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