allied Syllabification: (al·lied)Pronunciation: /əˈlīd, ˈalˌīd/Translate allied | into French | into German | into Italian | into Spanish Definition of allied adjective joined by or relating to members of an alliance:allied territories the allied fleet (usually Allied) of or relating to the US and its allies in World War I and World War II and after:the liberation of Paris by Allied troops (allied to/with) in combination or working together with:skilled craftsmanship allied to advanced technology connected or related:members of the medical and allied professionsallied in other Oxford dictionaries Definition of allied in the British & World English dictionary