REGNANT

regnant. Regnant, a. reigning, prevalent, predominant

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Reg″nant (–nant), a. [[L. regnans, -antis, p. pr. of regnare to reign: cf. F régnant. See Reign.]] 1. 1. Exercising regal authority; reigning; as, a queen regnant.
2. 2. Having the chief power; ruling; predominant; prevalent. “A traitor to the vices regnant.” Swift.