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Dictionary definition for: Proprietary

1. (n) an unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits

2. (a) protected by trademark or patent or copyright; made or produced or distributed by one having exclusive rights; "Tylenol" is a proprietary drug of which "acetaminophen" is the generic form"

WordNet 2.1 Copyright Princeton University. All rights reserved.