What is Dominant?

Legal Definition
Estates. In the civil law, this term is used to signify the estate to which a servitude or easement is due from another estate; for example, where the owners of the estate, Blackacre, have a right of way or passage over the estate Whiteacre, the former is called the dominant, and the latter the servient estate. Bouv. Inst. n. 1600.
-- Bouviers Law Dictionary
Legal Definition
Controlling; principal; ruling.
-- Ballentine's Law Dictionary