proprietary
adjective /prəˈpraɪətri/
/prəˈpraɪəteri/
[usually before noun]- (of goods) made and sold by a particular company and protected by a registered trademark
- a proprietary medicine
- proprietary brands
- a proprietary name
- relating to an owner or to the fact of owning something
- The company has a proprietary right to the property.
Word Originlate Middle English (as a noun denoting a member of a religious order who held property): from late Latin proprietarius ‘proprietor’, from proprietas, from proprius ‘one's own, particular’.