regnant Meaning, Definition & Usage

  1. adjective satellite exercising power or authority
    reigning; ruling.

WordNet

Reg"nant adjective
Etymology
L. regnans, -antis, p. pr. of regnare to reign: cf. F régnant. See Reign.
Definitions
  1. Exercising regal authority; reigning; as, a queen regnant.
  2. Having the chief power; ruling; predominant; prevalent. "A traitor to the vices regnant." Swift.

Webster 1913