say it: pri-SID-ee-uhm
presidium is a noun meaning "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". It carries one recorded sense.
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
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for presidium come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.