proprietary

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to a proprietor or to ownership.
• adjective Privately owned, as a business.
• adjective Owned by a private individual or corporation under a trademark or patent.
• noun A proprietor or group of proprietors.
• noun Ownership; proprietorship.
• noun A proprietary medicine.
• noun One granted ownership of a proprietary colony.

from The Century Dictionary.

• Belonging to a proprietor or owner; of or pertaining to property or ownership: as, proprietary rights.
• noun One who has exclusive title; one who possesses or holds the title to a thing in his own right; an owner; a proprietor; specifically, in American colonial history, the grantee or owner, or one of the owners, of one of those colonies called proprietary colonies (in distinction from charter colonies and royal colonies or provinces). See colony, 1.
• noun A body of proprietors collectively: as, the proprietary of a county.
• noun The right of proprietor; ownership.
• noun In monasteries, a monk who had reserved goods and effects to himself, not withstanding his renunciation of all at the time of his profession.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Belonging, or pertaining, to a proprietor; considered as property; owned.
• adjective manufactured articles which some person or persons have exclusive right to make and sell.
• noun 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.
• noun A body proprietors, taken collectively.
• noun (Eccl.) A monk who had reserved goods and effects to himself, notwithstanding his renunciation of all at the time of profession.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Of or relating to property or ownership, as proprietary rights.
• adjective Of or relating to the quality of being an owner, as the proprietary class.
• adjective Manufactured exclusively by the owner of intellectual property rights (IPR), as with a patent or trade secret.
• adjective Privately owned, as a proprietary lake.
• adjective of a person Possessive, jealous, or territorial.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective protected by trademark or patent or copyright; made or produced or distributed by one having exclusive rights
• noun an unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits