[count] formal: a person who owns a business or property ▪ She is the proprietor of the store.▪ a restaurant proprietor
— pro·pri·e·tor·ship/prəˈprajətɚˌʃɪp/noun, pluralpro·pri·e·tor·ships [count] ▪ The business is a sole proprietorship and not a partnership. [noncount] ▪ He was given proprietorship of the store.