n.
Variant: also pro · log
Pronunciation: ' pr ō - ˌ lo ̇ g, - ˌ läg
Function: noun
Etymology: Middle English prolog, from Anglo-French prologue, from Latin prologus preface to a play, from Greek prologos part of a Greek play preceding the entry of the chorus, from pro- before + legein to speak ― more at PRO- , LEGEND
Date: 14th century
1 : the preface or introduction to a literary work
2 a : a speech often in verse addressed to the audience by an actor at the beginning of a play b : the actor speaking such a prologue
3 : an introductory or preceding event or development