English to English
1. protected by trademark or patent or copyright; made or produced or distributed by one having exclusive rights
`Tylenol' is a proprietary drug of which `acetaminophen' is the generic form
2. Belonging, or pertaining, to a proprietor; considered as property; owned; as, proprietary medicine.
3. an unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits
4. A proprietor or owner; one who has exclusive title to a thing; one who possesses, or holds the title to, a thing in his own right.