Dominant

Part of speech: noun (n.)

The fifth tone of the scale; thus G is the dominant of C, A of D, and so on. Dominant chord (Mus.), the chord based upon the dominant.

Part of speech: adjective (a.)

Ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power. The member of a dominant race is, in his dealings with the subject race, seldom indeed fraudulent, . . . but imperious, insolent, and cruel. Macaulay. Dominant estate or tenement (Law), the estate to which a servitude or easement is due from another estate, the estate over which the servitude extends being called the servient estate or tenement. Bouvier. Wharton's Law Dict. -- Dominant owner (Law), one who owns lands on which there is an easement owned by another.

Synonyms: Governing; ruling; controlling; prevailing; predominant; ascendant.