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third party

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noun
any party to an incident, case, quarrel, etc., who is incidentally involved.
(in a two-party system) a political party formed as a dissenting or independent group from members of one or both of the two prevailing major parties.
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Origin of third party

An Americanism dating back to 1795–1805
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use third party in a sentence

British Dictionary definitions for third party

third party

noun
a person who is involved by chance or only incidentally in a legal proceeding, agreement, or other transaction, esp one against whom a defendant claims indemnity
adjective
insurance providing protection against liability caused by accidental injury or death of other persons or damage to their propertythird-party insurance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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