sci-fi /saɪ.faɪ/noun 2adjective 1 noun2 •A genre of movies featuring mostly fictional scientific scenes.I'm the kind of sci-fi addict who can stand any amount of improbability, bad acting, uninterested direction and poverty-row budgets, but can't take The Mind of Mr. Soames. — 1970 •(informal) Syllabic abbreviation of science fiction. adjective1 •Of or pertaining to such a genre.
