1. relating to an owner or ownership: "the company has a proprietary right to the property"
▪ (of a product) marketed under and protected by a registered trade name: "proprietary brands of insecticide"
▪ behaving as if one were the owner of someone or something:"he looked about him with a proprietary air"
noun
1. an owner; proprietor.
▪ especially in North America, a grantee or owner of a colony who has been granted, as an individual or as part of a group, the full rights of self-government.
Word Originlate Middle English (as a noun denoting a member of a religious order who held property): from late Latin proprietarius ‘proprietor’, from proprietas (see property).
