Today's word is collaboratorium. Dana reports "I'm not entirely sure how many words are being jammed into this one, but the meaning is pretty clear just on reading... I like it. First seen (by me) at the ubiquitous librarian."
There are now many places where the word is used, and in a number of different senses, but the clearest meaning - a place where collaboration takes place and which is designed and operates with this as a primary goal - works better. This is the meaning the Ubiquitous Librarian has in mind (not really ubiquitous, I hadn't come across him before, but the blog is great) in his link to a 2005 discussion of a new library space at Cal State San Marcos.