Dispositor

The planet that rules the sign another planet occupies. For example, Mercury in Taurus is disposited by Venus, the natural planetary ruler of Taurus. A dispositor influences the action of the planet it disposits. Disposition by a benefic is favourable,  especially if the dispositor is more elevated than the disposed. Mutual Disposition (when planets are in each other's signs, eg: Moon in Leo and Sun in Cancer) is very favourable and reduces any surrounding negativity.

Disjunct      Diurnal