IPA: /ˈplɛnəri/
KK: /ˈplɛnəri/
Complete in every way; having full power or authority.
The committee held a plenary session to discuss the new policies.
Plenary → It is formed from "plenus" (meaning full) and the suffix "-ary" (meaning relating to or connected with). The word "plenary" refers to something that is full or complete, often used in the context of meetings or sessions that are attended by all members.
Think of 'full' ('plenus') to remember that 'plenary' means something that is complete or full, especially in terms of attendance or participation.