noun
presidium
pri-SID-ee-um/prɪˈsɪdiəm/
A group that governs an organization or presides over a meeting.
The presidium meets each month to oversee the organization's work.

Etymology
The pieces give the image “sit before,” which developed into guarding or overseeing others. That supervisory sense underlies the name of a standing executive committee.
In context
at an enlarged meeting the presidium the fourteen leaders of the soviet republics listened to what was effectively a warning to them all
More examples
- Delegates elect a presidium to lead the conference.
- The presidium approves the association's annual budget.
- Members of the presidium take turns chairing the sessions.
Forms
presidium · presidiums · presidia