alliance /əˈlaɪ.əns/noun 7verb 1forms 3 noun7 •a joining together of nations, parties or families who want the same things and support each othermatrimonial alliancesan alliance between church and state, or welded by two countries •(India) Marriage. •Any union resembling that of families or states; union by relationship in qualities; affinity.And as for kindred , there is no Alliance neerer vnto any one, than their Countrey , that is to be vnto vs another God, and our prime and dearest Parent. — 1624 •The state of being allied. •The act of allying or uniting. •The persons or parties allied. •(old-fashioned) Synonym of cohort (“group of orders of organisms”). verb1 •(no longer used) To connect or unite by alliance; to ally. formsallianced · alliancing · alliances