›(abbreviation prop.)the owner of a business, especially a hotel, a store, or a company that publishes newspapers: Their father was the proprietor of an electrical and furniture store.a small business proprietora garage/hotel/newspaper proprietor
›PROPERTYthe owner of land or buildings: The man claimed to be the proprietor of the disputed land.He rose to become proprietor of Wye Hall, one of Maryland's historic estates.
›LAWthe owner of a copyright (= the legal rights to a book, play, piece of music, etc.) or a patent (= the legal rights to a product): The proprietor of a patent may wish to be selective about markets and granting licences.