əˈlīd, aˈ-; freq in all senses & most freq in sense 2b ˈaˌl- adjective
Etymology: Middle English, from past participle of allien to ally — more at ally
1. : joined , connected
closely allied to his pride was his very strict sense of justice — R.A.Hall b.1911
2.
a. : joined in alliance by compact or treaty
all the allied powers
a party of allied soldiers
flags of the allied nations
b. usually capitalized : of, by, or relating to the nations united against the Central European powers in World War I or those united against the Axis powers in World War II
the largest Allied naval exercise ever held
a unified Allied theater was created under British direction — R.M.Leighton
3.
a. : related especially by common properties or similar characteristics
geography and allied sciences
agricultural and allied workers
b. : genetically related ; specifically : presumed to share common ancestors
allied groups of plants or animals