Well if you google it you’ll find that it’s a drinking party http://en.wikipedia.org/wiki/Symposium
Kinda! This is probably sightly more accurate: http://www.thefreedictionary.com/symposium
The CollabHub Symposium is more of a kind of incubator – an exhibition and celebration of collaborative work done this year. It is also a chance for lots of people to come together, enjoy cake, music, chat, network and dream up projects. Contact firstname.lastname@example.org if you’d like to post on this blog, or to participate in the Symposium.