plural proprietaries
Definition of proprietary
(Entry 1 of 2)
1
: one that possesses, owns, or holds exclusive right to something
specifically
: proprietor sense 1
2
: something that is used, produced, or marketed under exclusive legal right of the inventor or maker
specifically
: a drug (such as a patent medicine) that is protected by secrecy, patent, or copyright against free competition as to name, product, composition, or process of manufacture
3
: a business secretly owned by and run as a cover for an intelligence organization
proprietary
adjectiveDefinition of proprietary (Entry 2 of 2)
1
: of, relating to, or characteristic of an owner or title holder
proprietary rights
2
: used, made, or marketed by one having the exclusive legal right
a proprietary process proprietary software
3
: privately owned and managed and run as a profit-making organization
a proprietary clinic
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Merriam-Webster unabridged
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Time Traveler for proprietary
The first known use of proprietary was in the 15th century
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