A voyager in cyberspace; a user of the Internet or virtual reality.(noun)
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Use "cybernaut" in a sentence
"It is easier to for a writer to shoot an astronaut through space to Mars and fight a Mars-giant with his ray-gun than it is to land a cybernaut in cyberspace and fight a cyber-giant with his L33t hacker Skillz."
"I believe that this is the first bill that ever made that journey, and that will make me whatever it was Ernestine said, a cybernaut, or whatever she said."
"He squatted down and peered at the burbling cybernaut."