Main Entry: ¹pro·pri·e·tary

Pronunciation: \p(r)ə-ˈprī-ə-ˌter-ē\

Function: noun

Inflected Form(s): plural pro·pri·e·tar·ies

: something that is used, produced, or marketed under exclusive legal right of the inventor or maker ; specifically : a drug (as a patent medicine) that is protected by secrecy, patent, or copyright against free competition as to name, product, composition, or process of manufacture