Presidium (n.)

permanent administrative committee of the U.S.S.R., 1924, from Russian prezidium, from Latin praesidium "a presiding over, defense," from praesidere "to protect," literally "to sit before" (see preside).

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Definitions of Presidium from WordNet

presidium (n.)
a permanent executive committee in socialist countries that has all the powers of some larger legislative body and that acts for it when it is not in session;
Synonyms: praesidium