Crossword Genius

Operating system developed by Bell Labs (4)

Ross

I believe the answer is:

unix

'operating system developed by bell labs' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for unix that I've seen before include "See this operating system" , "Computer open operating system" , "software" .)

I've seen this clue in the LA Times and the Wall Street Journal.
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