We found one dictionary that defines the word proprietary eponyms:

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1. proprietary eponyms: Wiktionary

▸ Words similar to proprietary eponyms ▸ Usage examples for proprietary eponyms ▸ Idioms related to proprietary eponyms ▸ Wikipedia articles (New!) ▸ Words that often appear near proprietary eponyms ▸ Rhymes of proprietary eponyms ▸ Invented words related to proprietary eponyms