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prologue

or prolog

[proh-lawg, -log] /ˈproʊ lɔg, -lɒg/
noun
1.
a preliminary discourse; a preface or introductory part of a discourse, poem, or novel.
2.
an introductory speech, often in verse, calling attention to the theme of a play.
3.
the actor or actress who delivers this.
4.
an introductory scene, preceding the first act of a play, opera, etc.
5.
any introductory proceeding, event, etc.:
Appetizing delicacies were the prologue to a long dinner.
verb (used with object), prologued, prologuing.
6.
to introduce with or as if with a prologue.
Origin of prologue
Latin
Greek
Middle English
Old French
1250-1300
1250-1300; Middle English prologe, prologue (< Old French prologue) < Latin prōlogus < Greek prólogos. See pro-2, -logue
Related forms
prologuist, prologist, noun
prologuelike, prologlike, adjective
unprologued, adjective
Synonyms
5. preamble; beginning, opening; prelude.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for prolog
Historical Examples

  • And first of the prolog of the first fyndyng, and interpretacioun of the said Buke out of diuerse langagis, etc.

    The Buke of the Order of Knyghthood Ramon Llull

  • The poem is relieved of all the episodes except the prolog and King Hrothgars discourse.

    The Translations of Beowulf Chauncey Brewster Tinker

  • It will be found that only two of the episodes are passed without mention—the prolog and the Tale of Thrytho.

    The Translations of Beowulf Chauncey Brewster Tinker
British Dictionary definitions for prolog

PROLOG

/ˈprəʊlɒɡ/
noun
1.
a computer programming language based on mathematical logic
Word Origin
C20: from pro(gramming in) log(ic)

prologue

/ˈprəʊlɒɡ/
noun
1.
  1. the prefatory lines introducing a play or speech
  2. the actor speaking these lines
2.
a preliminary act or event
3.
(in early opera)
  1. an introductory scene in which a narrator summarizes the main action of the work
  2. a brief independent play preceding the opera, esp one in honour of a patron
verb -logues, -loguing, -logued (US) -logs, -loging, -loged
4.
(transitive) to introduce or preface with or as if with a prologue
Word Origin
C13: from Latin prologus, from Greek prologos, from pro-² + logos discourse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for prolog

prologue

n.

early 14c., from Old French prologue (12c.) and directly from Latin prologus, from Greek prologos "preface to a play, speaker of a prologue," literally "a speech beforehand," from pro- "before" (see pro-) + logos "discourse, speech," from legein "to speak" (see lecture (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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