Unununium - technical definition

A hypothetical operating system that was the brainchild of Dave Poirier of Winnipeg, Manitoba, Canada. The goal was an OS with maximum performance, complete programmer control and simple communication between components. Unununium postulated a unique architecture that placed the kernel, system software and application software in the same address space with no restrictions regarding which OS functions must remain in memory.

Pronounced "oon-oon-oon-e-um," which stands for 111, Unununium is the former name of Roentgenium (atomic number 111). The project began in 2001, but subsequently lost focus. See Unununium time.