(uncountable) The state of being allied. / (countable) The act of allying or uniting.

(obsolete) To connect or unite by alliance; to ally.

plural of alliance

simple past tense and past participle of alliance

A former unincorporated community in Humboldt County, California, United States, now incorporated into the city of Arcata. / An unincorporated community in Madison County, Indiana, United States.

plural of alliancer

One who favors and/or forms an alliance.

present participle of alliance

A coalition among seemingly antagonistic groups, especially if one is religious, for ad hoc or hidden gain. (See examples.)

(historical) A coalition of Russia, Austria and Prussia formed in 1815, ostensibly to regulate all national and international relations in accordance with the principles of Christian charity.