third-party

1 of 2

adjective

third-par·​ty ˈthərd-ˈpär-tē How to pronounce third-party (audio)
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

third party

2 of 2

noun

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

Examples of third-party in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The Treasury Department reported that personnel were first made aware of the breach on Dec. 8 after a third-party firm flagged the illicit access. Timothy Nerozzi, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 30 Dec. 2024 One of the problems is that employees will often click through single sign-on and authorization screens, potentially granting permissions to unknown third-party apps, Vivek Ramachandran, founder of SquareX, said. Davey Winder, Forbes, 30 Dec. 2024
Noun
Educate Your Internal Team About Cybersecurity Most businesses simply outsource cybersecurity or privacy to a third party or trust that their enterprise platform is developing the tools. Expert Panel®, Forbes, 26 Dec. 2024 Editorial Note: Opinions, analyses, reviews or recommendations expressed in this article are those of the Select editorial staff’s alone, and have not been reviewed, approved or otherwise endorsed by any third party. Jason Stauffer, CNBC, 26 Dec. 2024 See all Example Sentences for third-party 

Word History

First Known Use

Adjective

1901, in the meaning defined at sense 1

Noun

1641, in the meaning defined at sense 1

Time Traveler
The first known use of third-party was in 1641

Dictionary Entries Near third-party

third party

third-party

third person

Cite this Entry

“Third-party.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/third-party. Accessed 3 Jan. 2025.

Kids Definition

third party

noun
1
: a person other than the main participants
a third party to the legal proceedings
2
a
: a political party operating usually for a limited time in addition to the two major parties in a 2-party system

Legal Definition

third party

see party sense 1a, b

Last Updated: - Updated example sentences
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