proprietor proprietary • proprietorial · · · Info · Definitions · Synonyms · Characters · · proprietor · · Text Latin · · Script 10 · · Length Definitions · · · (noun) (law) someone who owns (is legal possessor of) a business. Synonyms: owner. Example: "He is the owner of a chain of restaurants." · · Noun Definition 1 Synonyms · · · owner · · Synonym 1 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074