In the Dumarest series of Science Fiction novels by E C Tubb which began with The Winds of Gath A Cyber is the name given to any member of the Cyclan, a race of cybernetically enhanced humans who are bent upon galactic domination. The word seems be a title or to form part of their names, for example there are characters with names like Cyber Avro and Cyber Dyne, and the leader of the Cyclan is always called Cyber Prime.