Definition of proprietary name in English:

proprietary name

Syllabification: pro·pri·e·tar·y name


  • A name of a product or service registered by its owner as a trademark and not usable by others without permission.
    More example sentences
    • I'm not advising anybody to break the law, or to violate trademarks or service marks or proprietary names or anything like that.
    • Those drugs have been and are sold in many countries under proprietary names which are registered as trade marks.
    • Trying to attach a proprietary name to a non-proprietary product is always fun.

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