third-party

1 of 2

adjective

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

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

b

: minor party

Examples of third-party in a Sentence

Recent Examples on the Web

Adjective

If your flight is delayed due to a ground stop, make sure you're tapped into flight updates to find out the latest information, whether that's via your airline's app or website, a third-party app that tracks flights, or even social media accounts for your origin or destination airports. —Stefanie Waldek, Travel + Leisure, 23 June 2024

One thought offered is that some voters who have been undecided or looking at a third-party candidate are now looking at Biden more favorably or are more worried about Trump. —Dan Balz, Washington Post, 22 June 2024

Noun

Our company is making the following AI pledge to all our current and potential customers: Your confidential information will not become output for a third party. —Amanda Gerut, Fortune, 20 June 2024

Statements to a third party are not necessarily reliable, let alone a confession. —Glenn Kessler, Washington Post, 14 June 2024

Word History

First Known Use

Adjective

1901, in the meaning defined at sense 1

Noun

1641, in the meaning defined at sense 1

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

b

: minor party

Legal Definition

third party

see party sense 1a, b