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[te-tral-uh-jee, -trah-luh-] /tɛˈtræl ə dʒi, -ˈtrɑ lə-/
noun, plural tetralogies.
a series of four related dramas, operas, novels, etc.
a group of four dramas, three tragedies and one satyr play, performed consecutively at the festival of Dionysus in ancient Athens.
Origin of tetralogy
1650-60; < Greek tetralogía. See tetra-, -logy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for tetralogy
Historical Examples
  • This first part of the tetralogy, which is the prologue, was not divided into acts.

    Wagner at Home Judith Gautier
  • The first act of Siegfried is one of the most dramatic in the tetralogy.

    Musicians of To-Day Romain Rolland
  • This series may be divided into two, each forming a tetralogy, or group of four plays.

    From Chaucer to Tennyson Henry A. Beers
  • He must be competently instructed in the tetralogy, or first four rules.

  • The drama itself comes second in the tetralogy of the Ring, being preceded by the Rheingold.

    The Valkyries Edward Frederic Benson
  • Wagner was obliged to accept this solution of his difficulties, and thus Bayreuth lost the sole right to the tetralogy.

  • He saw what was happening there with regard to matters of art, and that he could not dream of producing his tetralogy.

    Wagner at Home Judith Gautier
  • But this latter is more properly to be considered as the overture to a trilogy than as the first drama of a tetralogy.

    The Valkyries Edward Frederic Benson
  • Wagner never tired of exploiting the variation form in his operas, particularly in the tetralogy.

    Beethoven George Alexander Fischer
  • "Richard III" is the fourth play of a tetralogy manifestly planned before the earlier members were completed.

    Tragedy Ashley H. Thorndike
British Dictionary definitions for tetralogy


noun (pl) -gies
a series of four related works, as in drama or opera
(in ancient Greece) a group of four dramas, the first three tragic and the last satiric
(pathol) a group of four symptoms present in one disorder, esp Fallot's tetralogy
Word Origin
C17: from Greek tetralogia; see tetra-, -logy
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 tetralogy

1650s, from Greek tetralogia, from tetra- (see tetra-) + -logia (see -logy).

Online Etymology Dictionary, © 2010 Douglas Harper
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tetralogy in Medicine

tetralogy te·tral·o·gy (tě-trāl'ə-jē, -trŏl'-)
A complex of four symptoms.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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