Regnant
Pronunciation : Reg"nant (-nant)
Part of Speech : a.
Etymology : [L. regnans, -antis, p. pr. of regnare to reign: cf. F r?gnant. See Reign.]
Definition : 1. Exercising regal authority; reigning; as, a queen regnant.
2. Having the chief power; ruling; predominant; prevalent. "A traitor to the vices regnant." Swift.
Source : Webster's Unabridged Dictionary, 1913