Meaning of “plenary” in the English Dictionary

"plenary" in American English

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plenaryadjective [ not gradable ]

us /ˈpli·nə·ri, ˈplen·ə-/ fml

having all the members of a group or organization present:

a plenary session

(Definition of “plenary” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"plenary" in Business English

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plenaryadjective [ before noun ]

uk /ˈpliːnəri/ us /ˈplenəri/

MEETINGS relating to a meeting at which all the members of a group or an organization are present:

a plenary meeting/session

plenarynoun [ C ]

uk /ˈpliːnəri/ us /ˈplenəri/ plural plenaries

MEETINGS a meeting at which all the members of a group or an organization are present:

They will reconvene in early March to continue deliberations, before bringing the rules to a full plenary of members for a vote.

(Definition of “plenary” from the Cambridge Business English Dictionary © Cambridge University Press)