[ uh-lahy-uhns ]
/ əˈlaɪ əns /
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the act of allying or state of being allied.
a formal agreement or treaty between two or more nations to cooperate for specific purposes.
a merging of efforts or interests by persons, families, states, or organizations: an alliance between church and state.
the persons or entities so allied.
marriage or the relationship created by marriage between the families of the spouses.
correspondence in basic characteristics; affinity: the alliance between logic and metaphysics.



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Origin of alliance

1250–1300; Middle English aliance<Old French, equivalent to ali(er) to ally + -ance-ance

synonym study for alliance

1. Alliance, confederation, league, union all mean the joining of states for mutual benefit or to permit the joint exercise of functions. An alliance may apply to any connection entered into for mutual benefit. League usually suggests closer combination or a more definite object or purpose. Confederation applies to a permanent combination for the exercise in common of certain governmental functions. Union implies an alliance so close and permanent that the separate states or parties become essentially one.


Definition for alliance (2 of 2)

[ uh-lahy-uhns ]
/ əˈlaɪ əns /


a city in NE Ohio.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for alliance

British Dictionary definitions for alliance (1 of 2)

/ (əˈlaɪəns) /


the act of allying or state of being allied; union; confederation
a formal agreement or pact, esp a military one, between two or more countries to achieve a particular aim
the countries involved in such an agreement
a union between families through marriage
affinity or correspondence in qualities or characteristics
botany a taxonomic category consisting of a group of related families; subclass

Word Origin for alliance

C13: from Old French aliance, from alier to ally

British Dictionary definitions for alliance (2 of 2)

/ (əˈlaɪəns) /

noun (in Britain)

  1. the Alliance the Social Democratic Party and the Liberal Party acting or regarded as a political entity from 1981 to 1988
  2. (as modifier)an Alliance candidate
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