epistolary UK /ɪˈpɪst(ə)ˌl(ə)ɹi/US /ɪˈpɪstəˌlɛɹi/adjective 3noun 1forms 3 adjective3 •Of or relating to letters, or the writing of letters. •In the manner of written correspondence.Bram Stoker's novel Dracula (1897) is written in epistolary style. •Carried on by written correspondence. noun1 •A Christian liturgical book containing set readings for church services from the New Testament Epistles. formsepistolaries · more epistolary · most epistolary