as in exclusive
belonging to only one person, unit, or group and not used by or available to others
The restaurant's proprietary recipe for barbecue sauce is only known to the head chef.
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Recent Examples of proprietary
Turtle Fur uses their own proprietary material for an incredibly soft next-to-skin feel that holds up well over extended seasons of use.
—
Maggie Slepian, Travel + Leisure, 7 Feb. 2025
The revenue increase is attributed to sales of the company's proprietary Reel Guard product.
—Quartz Intelligence Newsroom, Quartz, 5 Feb. 2025
Musk also owns Tesla and Space X. Grok is X's proprietary AI bot.
—Barbara A. Perry, Newsweek, 28 Jan. 2025
Amazon, for instance, has a proprietary ebook file type that can only be opened by a Kindle device, or within the Kindle app.
—Boone Ashworth, WIRED, 28 Jan. 2025
See all Example Sentences for proprietary 
Maggie Slepian, Travel + Leisure, 7 Feb. 2025
The revenue increase is attributed to sales of the company's proprietary Reel Guard product.
—Quartz Intelligence Newsroom, Quartz, 5 Feb. 2025
Musk also owns Tesla and Space X. Grok is X's proprietary AI bot.
—Barbara A. Perry, Newsweek, 28 Jan. 2025
Amazon, for instance, has a proprietary ebook file type that can only be opened by a Kindle device, or within the Kindle app.
—Boone Ashworth, WIRED, 28 Jan. 2025
See all Example Sentences for proprietary
Thesaurus Entries Near proprietary
Cite this Entry
“Proprietary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/proprietary. Accessed 21 Feb. 2025.
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