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
However, when there is no third-party income information—self-reporting—tax compliance is just 55%. Kelly Phillips Erb, Forbes, 12 Mar. 2025 See More South's Best 2025 Winners South's Best Voting Process An online survey was conducted by third-party agency Proof Insights among Southern Living Consumers, asking them to rate their favorite places across the South. Stacey Lastoe, Southern Living, 11 Mar. 2025
Noun
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, 28 Feb. 2025 Quality: Supplement brands may have their products reviewed for quality by third parties. Brittany Lubeck, Ms, Rdn, Verywell Health, 25 Feb. 2025 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

Browse Nearby Words

See all Nearby Words

Cite this Entry

“Third-party.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/third-party. Accessed 15 Mar. 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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