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Meaning of tetralogy

te•tral•o•gy

Pronunciation: (te-tral'u-jē, -trä'lu-), [key]
— pl. -gies.
  1. a series of four related dramas, operas, novels, etc.
  2. a group of four dramas, three tragedies and one satyr play, performed consecutively at the festival of Dionysus in ancient Athens.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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