intermediary

US /ˌɪn.t̬ɚˈmiː.di.ə.ri/
UK /ˌɪn.t̬ɚˈmiː.di.ə.ri/
"intermediary" picture
1.

a person who acts as a link between people in order to try to bring about an agreement or reconciliation; a mediator.

:
The diplomat served as an intermediary between the two warring nations.
She acted as an intermediary in the negotiations.
1.

acting as a link between people or things.

:
The internet serves as an intermediary platform for global communication.
The software provides an intermediary layer between the user and the database.