prologue
noun
[ ˈprəʊlɒɡ ]
• a separate introductory section of a literary, dramatic, or musical work.
• "the suppressed prologue to Women in Love"
Similar:
introduction,
foreword,
preface,
preamble,
prelude,
preliminary,
intro,
exordium,
proem,
prolegomenon,
prooemium,
prooemion,
• an event or act that leads to another.
• "the events from 1945 to 1956 provided the prologue to the post-imperial era"
Origin:
Middle English: from Old French, via Latin from Greek prologos, from pro- ‘before’ + logos ‘saying’.