proprīˈetary adjective

1. Of the nature of property
2. Legally made only by a person or body of persons having special rights, esp a patent or trademark
3. Relating to or belonging to the legal owner
4. (of a company, etc) privately owned and run
5. Owning property

1. An owner
2. A body of owners
3. Ownership
4. A proprietary or patented drug (medicine)
5. A business secretly owned by or controlled by the CIA and used to provide cover for its agents and activities (US)

proprīetorial /-tōˈri-əl or -töˈri-əl/ adjective

proprīetoˈrially adverb

proprīˈetorship noun