Plenipotentiary /(plĕn"ĭ*pō̇*tĕn"shĭ*ā̇*ry̆)/

pl. Plenipotentiaries

1. A person invested with full power to transact any business; especially, an ambassador or envoy to a foreign court, with full power to negotiate a treaty, or to transact other business.

1. Containing or conferring full power; invested with full power; as, plenipotentiary license; plenipotentiary ministers.