Pronunciation: (plen"u-pu-ten'shē-er"ē, -shu-rē), [key]
—n., pl. -ar•ies,
a person, esp. a diplomatic agent, invested with full power or authority to transact business on behalf of another.
1. invested with full power or authority, as a diplomatic agent.
2. conferring or bestowing full power, as a commission.
3. absolute or full, as power.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.