mediate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To resolve or settle (differences) by working with all the conflicting parties: mediate a labor-management dispute.
2. v. To bring about (a settlement, for example) by working with all the conflicting parties.
3. v. To effect or convey as an intermediate agent or mechanism.
4. v. To intervene between two or more disputants in order to bring about an agreement, a settlement, or a compromise.
5. v. To settle or reconcile differences.
6. v. To have a relation to two differing persons or things.
7. adj. Acting through, involving, or dependent on an intervening agency.
8. adj. Being in a middle position.

Century Dictionary and Cyclopedia

1. To occupy an intermediate place or position; be interposed; have the position of a mean.
2. To have the function of a mean or means; effect a connection between other things, or a transition from one to the other.
3. To intervene for the purpose of reconciliation; act as an intermediary for the settlement of a disagreement or discord; intercede.
4. To take an intermediate stand; act moderately; avoid extremes.
5. In spiritualism, specifically, to act as a medium.
6. Synonyms See interposition.
7. To effect by intervention, interposition, or any intermediary action.
8. To effect a relation between or a transition from, as between two things, or from one thing to another; bring into relation by some intervening means or process.
9. To harmonize; reconcile; settle, as a dispute, by intervention.
10. To further by interceding, or by acting as a mediator.
11. To divide into two equal or approximately equal parts.
12. Situated between two extremes; lying in the middle; intermediate; intervening.
13. Acting as a means or medium; not direct or immediate in operation; not final or ultimate.
14. Effected by or due to the intervention of a mean or medium; derived from or dependent upon some intervening thing or act; not primary, direct, or independent.

Wiktionary

1. v. transitive to resolve differences, or to bring about a settlement, between conflicting parties
2. v. intransitive to intervene between conflicting parties in order to resolve differences or bring about a settlement
3. v. To divide into two equal parts.
4. adj. acting through a mediating agency
5. adj. intermediate between extremes

GNU Webster's 1913

1. adj. Being between the two extremes; middle; interposed; intervening; intermediate.
2. adj. Acting by means, or by an intervening cause or instrument; not direct or immediate; acting or suffering through an intervening agent or condition.
3. adj. Gained or effected by a medium or condition.
4. v. rare To be in the middle, or between two; to intervene.
5. v. To interpose between parties, as the equal friend of each, esp. for the purpose of effecting a reconciliation or agreement.
6. v. To effect by mediation or interposition; to bring about as a mediator, instrument, or means.
7. v. rare To divide into two equal parts.

WordNet 3.0

1. v. occupy an intermediate or middle position or form a connecting link or stage between two others
2. v. act between parties with a view to reconciling differences
3. adj. acting through or dependent on an intervening agency
4. adj. being neither at the beginning nor at the end in a series