- 1(of meetings, etc.) to be attended by everyone who has the right to attend The new committee holds its first plenary session this week.
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- 2without any limit; complete The Council has plenary powers to administer the agreement.
plenary
adjectiveNAmE//ˈplɛnəri//, NAmE//ˈplinəri//
[only before noun] (formal)Check pronunciation: plenary