third-party

adjective third-par·ty \ ˈthərd-ˈpär-tē \

|Updated on: 8 Aug 2018

Definition of third-party

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

See third-party defined for English-language learners

First Known Use of third-party

1901

in the meaning defined at sense 1

See Words from the same year

NEW! Time Traveler

third party

noun

Definition of third party

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 : minor party

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Recent Examples of third party from the Web

On June 12, Macy's blocked the profiles that seemed to be breached by the third party.

— caroline blackmon, USA TODAY, "Macy's warns customers of online data breach," 11 July 2018
The 2018 FIFA World Cup opening ceremony was a newsworthy event produced by a third party and carried live on Fox.

— maria pasquini, PEOPLE.com, "Robbie Williams Flashes a Middle Finger at a Camera During World Cup Opening Performance," 15 June 2018
Food service for overnight patients would be provided by meals that come in frozen pouches through a third party.

— guy boulton, Milwaukee Journal Sentinel, "Froedtert Health to build a 'neighborhood' hospital in Mequon," 25 May 2018
However, true authentication would have to come through a third party — Memorabilia Evaluation and Research Services, known to collectors by the acronym MEARS.

— nathan baird, Post-Tribune, "Family bond preserves John Wooden's Purdue jersey," 10 May 2018
Before the city acted on the demolition permit, Geneva resident Fred Zinke filed as a third party to have the building designated a historic landmark.

— linda girardi, Aurora Beacon-News, "Geneva declares Old Mill Race Inn building a landmark," 9 May 2018
On June 12, Macy's blocked the profiles that seemed to be breached by the third party.

— caroline blackmon, USA TODAY, "Macy's warns customers of online data breach," 11 July 2018
On June 12, Macy's blocked the profiles that seemed to be breached by the third party.

— caroline blackmon, Detroit Free Press, "Macy's warns customers of online data breach," 6 July 2018
Three of which would be owned and operated by a third party, and one, built by Tesla, would be owned and operated by PG&E itself.

— megan geuss, Ars Technica, "Tesla strikes another mammoth energy storage deal in California," 2 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'third party.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.