1. the act of allying or state of being allied.
  2. a formal agreement or treaty between two or more nations to cooperate for specific purposes.
  3. a merging of efforts or interests by persons, families, states, or organizations: an alliance between church and state.
  4. the persons or entities so allied.
  5. marriage or the relationship created by marriage between the families of the spouses.
  6. correspondence in basic characteristics; affinity: the alliance between logic and metaphysics.


  1. a city in NE Ohio.


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

noun (in Britain)

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

c.1300, “bond of marriage” (between ruling houses or noble families), from Old French aliance (12c., Modern French alliance) “alliance, bond; marriage, union,” from aliier (Modern French allier) “combine, unite” (see ally (v.)). As a bond or treaty between rulers, late 14c.

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