- belonging to a proprietor.
- being a proprietor; holding property: the proprietary class.
- pertaining to property or ownership: proprietary wealth.
- belonging or controlled as property.
- (of a brand name, product, service, formula, etc.) protected by a patent, copyright, or trademark: proprietary drugs; a proprietary name; a proprietary logo; a proprietary blend of ingredients.
- privately owned and operated for profit: proprietary hospitals.
noun, plural pro·pri·e·tar·ies.
- an owner or proprietor.
- a body of proprietors.
- American History. the grantee or owner, or one of the grantees or owners, of a proprietary colony.
- something owned, especially real estate.
- a proprietary medicine.
- Also called proprietary school. a school organized as a profit-making venture primarily to teach vocational skills or self-improvement techniques.
- of, relating to, or belonging to property or proprietors
- privately owned and controlled
- med of or denoting a drug or agent manufactured and distributed under a trade nameCompare ethical (def. 3)
noun plural -taries
- med a proprietary drug or agent
- a proprietor or proprietors collectively
- right to property
- property owned
- Also called: lord proprietary (in Colonial America) an owner, governor, or grantee of a proprietary colony
adj.mid-15c., “possessing worldly goods in excess of a cleric’s needs,” from Medieval Latin proprietarius “owner of property,” noun use of Late Latin adjective proprietarius “of a property holder,” from Latin proprietas “owner” (see property). Meaning “held in private ownership” is first attested 1580s. The word was used earlier in English as a noun meaning “proprietor,” also “worldly person” (c.1400), from a noun use in French and Medieval Latin. adj.
- Exclusively owned, as of a hospital.
- Owned by an individual or corporation under a trademark or patent, as of a drug.
- A proprietary medicine.