Definition - The study of the common names — specifically, the principles of naming, especially regarding regional, social, and occupational variations.

1. As opposed to onomastics, the study of proper names and their origins and onomatology, the science of name and term formation.

Etymology -
The word derives from the Greek onoma, name.

Oxford English Dictionary -
Its first citation is from 1931:
"The referents … are the basis of research in onomasiology."
(G. Stern Meaning & Change of Meaning 2)

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