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proprietary

mastery

UK /pɹəˈpɹaɪ.ə.tə.ɹi/ US /pɹəˈpɹaɪ.əˌtɛɹ.i/adjnoun

card 1 of 10 · context meaning

Which meaning of 'proprietary' best matches its usage in the sentence?

The browser did not support the proprietary extension, so the webpage displayed incorrectly.