third-par·ty
ˈthərd-ˈpär-tē 
1
: of, relating to, or involving a third party
third-party insurance
2
: of, relating to, or being software that is created by a vendor to be compatible with the products of another vendor
1
: a person other than the principals
a third party to a divorce proceeding
insurance against injury to third parties
2
a
: a major political party operating over a limited period of time in addition to two other major parties in a nation or state normally characterized by a two-party system
b
Examples of third-party in a Sentence
Recent Examples on the Web
Evelyn Cheng, CNBC, 26 Oct. 2025
Keep in mind, however, that Perplexity post-trains third-party models.
—PC Magazine, 25 Oct. 2025
Lauren Giella, MSNBC Newsweek, 29 Oct. 2025
In a statement to NBC News Tuesday night, the university said the monkeys belonged to a third party.
—Dennis Romero, NBC news, 29 Oct. 2025
See All Example Sentences for third-party
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Adjective
And, in an indication of widespread appeal, different third-party merchants sell the glasses online in China.
—Evelyn Cheng, CNBC, 26 Oct. 2025
Keep in mind, however, that Perplexity post-trains third-party models.
—PC Magazine, 25 Oct. 2025
Noun
An investigation found that an unauthorized third party gained access to the health system's network and obtained patients’ personal data.
—Lauren Giella, MSNBC Newsweek, 29 Oct. 2025
In a statement to NBC News Tuesday night, the university said the monkeys belonged to a third party.
—Dennis Romero, NBC news, 29 Oct. 2025
See All Example Sentences for third-party
Cite this Entry
“Third-party.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/third-party. Accessed 31 Oct. 2025.
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