It should be uiuc

Generally refers to the University of Illinois at Urbana-Champaign (UIUC).

University of Illinois,

It is one of the most influential public university systems in the United States. It has the reputation of "public ivy" and enjoys a high reputation all over the world. Its three branches are located in Urbana-Champaign, Illinois, Chicago, the largest city, and Springfield, the state capital.