Definition of "scientifiction"

I am supposed to report Münchhaussen's[sic] doings; am supposed to be writing fiction, scientifiction, to be correct.

1916 January, Hugo Gernsback, Electrical Experimenter, page 474

There is the usual fiction magazine, the love story and the sex-appeal type of magazine, the adventure type, and so on, but a magazine of "Scientifiction" is a pioneer in its field in America. By "scientifiction" I mean the Jules Verne, H. G. Wells, and Edgar Allan Poe type of story—a charming romance intermingled with scientific fact and prophetic vision.

1926, Hugo Gernsback, Amazing Stories, "A New Sort of Magazine"

Lewis's novels are the scientifiction of a philosopher.

1949, Chad Walsh, C. S. Lewis: Apostle to the Skeptics