Symposiast

• (n.) One engaged with others at a banquet or merrymaking.
Found on http://thinkexist.com/dictionary/meaning/symposiast/

symposiast

noun someone who participates in a symposium
Found on https://www.encyclo.co.uk/local/20974

Symposiast

Sym·po'si·ast noun One engaged with others at a banquet or merrymaking. Sydney Smith.
Found on http://www.encyclo.co.uk/webster/S/264

symposiast

participant at a conference
Found on http://phrontistery.info/s.html

symposiast

symposiast A participant in a symposium (a formal meeting held for the discussion of a subject, during which individual speakers may make presentations).
Found on http://www.wordinfo.info/words/index/info/view_unit/1734/