predominancy

PREDOM'INANCY, n. [See Predominant.]

1. Prevalence over others; superiority in strength, power, influence or authority; ascendancy; as the predominance of a red color in a body of various colors; the predominance of love or anger among the passions; the predominance of self-interest over all other considerations; the predominance of imperial authority in the confederacy.

2. In astrology,the superior influence of a planet.