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English definition of “Proprietary”

Proprietary

adjective     /prəˈpraɪətəri/ US   /prəˈpraɪəteri/ (written abbreviation Pty)
LAW used in the names of companies in Australia , New Zealand, and South Africa : Tenneco Energy Australia Pty Ltd
(Definition of Proprietary adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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