mediate

Short definition from Wiktionary

Verb

1. 1
   To resolve differences, or to bring about a settlement, between conflicting parties.
2. 2
   To intervene between conflicting parties in order to resolve differences or bring about a settlement.
3. 3
   To divide into two equal parts.
4. 4
   To act as an intermediary causal or communicative agent; to convey.
5. 5
   To act as a spiritualistic medium.
6. 6
   To communicate via media; to frame; to provide a cultural narrative about.

Adjective

1. 1
   Acting through a mediating agency, indirect.
2. 2
   Intermediate between extremes.
3. 3
   Gained or effected by a medium or condition.