PROLOGUE

US also prolog [noun] [C] - an introductory part at the beginning of a play, story or long poem, often giving information about events that have happened before the time when the play, story or poem beginsThe prologues to many plays of this period were actually spoken on stage by the actors.(figurative informal) A series of internal struggles was the prologue to (= the events that led to) full-scale civil war.Compare epilogue.