what does "UNIX" really stand for?

[Ken Lee]

There's an article in this week's "MIS Week" that claims that the name
"UNIX" was invented by Brian Kernighan in the mid-1960'.  He, along
with Dennis Ritchie and Ken Thompson, were once part of the MIT Multics
project, but now part of the Bell Labs computer science lab.  Ritchie
and Thompson were developing a simpler, more elegant operating system.
Kernighan called it "castrated Multics", thus UNIX.  

Anyone want to confirm or deny this?

Ken
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