Plen`i*po*ten"ti*a*ry (?), n.; pl. Plenipotentiaries (#). [LL. plenipotentiarius: cf. F. pl'enipotentiaire.]
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.
© Webster 1913.
Plen`i*po*ten"ti*a*ry, a.
Containing or conferring full power; invested with full power; as, plenipotentiary license; plenipotentiary ministers.
Howell.
© Webster 1913.