allied

US /ˈæl.aɪd/
UK /ˈæl.aɪd/
"allied" picture
1.

joined by treaty or agreement

:
The allied forces launched a coordinated attack.
They formed an allied front against the common enemy.
2.

related or connected by nature or origin

:
Biology and chemistry are closely allied fields of study.
His research is allied to the study of climate change.