from Fancyclopedia 2 ca. 1959
A classification sometimes used for science-fiction proper. But in this volume it designates science-fiction in which fantasy elements are vital — e g Lest Darkness Fall, in which hero Padway is struck by lightning and thus transferred to decadent Rome, where all his other actions are science-fictional; or those in which the author (like Ego Clarke in The City and The Stars) depicts the accomplishments of a science so advanced that it merges with wish-fulfillment fantasy.