/ ˌɪntəˈmiːdiəri; NAmE ˌɪntərˈmiːdieri/ noun
( pl. -ies ) intermediary (between A and B) a person or an organization that helps other people or organizations to make an agreement by being a means of communication between them
SYN mediator , go-between :
Financial institutions act as intermediaries between lenders and borrowers.
All talks have so far been conducted through an intermediary.
► inter·medi·ary adjective [ only before noun ]:
to play an intermediary role in the dispute
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WORD ORIGIN
late 18th cent.: from French intermédiaire , from Italian intermediario , from Latin intermedius , from inter- between + medius middle.