D defs.my
Entry 2 senses Webster, 1913

Regnant

/(-nant)/ · Reg·nant · IPA /ˈɹɛɡnənt/
01 a. Exercising regal authority; reigning; as, a queen regnant.
  1. 1.
    Exercising regal authority; reigning; as, a queen regnant.
  2. 2.
    Having the chief power; ruling; predominant; prevalent.