I. ˌple-nə-pə-ˈten(t)-sh(ə-)rē, -shē-ˌer-ē adjective
Etymology: Medieval Latin plenipotentiarius, adjective & noun, from Late Latin plenipotent-, plenipotens
Date: circa 1645
1. : invested with full power
2. : of or relating to a plenipotentiary
II. noun
( plural -ries )
Date: circa 1656
: a person and especially a diplomatic agent invested with full power to transact business