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[tril-uh-jee] /ˈtrɪl ə dʒi/
noun, plural trilogies.
a series or group of three plays, novels, operas, etc., that, although individually complete, are closely related in theme, sequence, or the like.
(in ancient Greek drama) a series of three complete and usually related tragedies performed at the festival of Dionysus and forming a tetralogy with the satyr play.
a group of three related things.
Origin of trilogy
From the Greek word trilogía, dating back to 1655-65. See tri-, -logy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for trilogy
Contemporary Examples
Historical Examples
  • Taking the trilogy as a whole, one will find that it is essentially symbolical.

  • trilogy and author of the two-volume Shike, among other novels.

    Shaman Robert Shea
  • And so we pass to the next drama of the trilogy, the second act of the tragedy.

  • His second trilogy of books was his most artistic gift to French literature.

    Egoists James Huneker
  • Note: The Duchesse de Langeais is the second part of a trilogy.

    The Duchesse de Langeais Honore de Balzac
British Dictionary definitions for trilogy


noun (pl) -gies
a series of three related works, esp in literature, etc
(in ancient Greece) a series of three tragedies performed together at the Dionysian festivals
Word Origin
C19: from Greek trilogia; see tri-, -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 trilogy

"any series of three related works," 1660s, from Greek trilogia "series of three related tragedies performed at Athens at the festival of Dionysus," from tri- "three" (see three) + logos "story" (see logos).

Online Etymology Dictionary, © 2010 Douglas Harper
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