PRESIDIUM Meaning of PRESIDIUM in English [ prɪ'sɪdɪʌm , -'zɪ- ](also praesidium ) ■ noun a standing executive committee in a communist country.Origin1920s: from Russ. prezidium , from L. praesidium (see preside ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004