in medias res /ɪn ˌmiːdiəs ˈɹeɪz/adjective 1adverb 1noun 1 adjective1 •Beginning in the middle of its storyline: said of a work of literature or a film.Although not strictly in medias res, the film uses flashbacks extensively. adverb1 •In the middle of a storyline.This novel begins in medias res. noun1 •Narrative presented in medias res.