• WordNet 3.6
    • n tetralogy a series of four related works (plays or operas or novels)
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Webster's Revised Unabridged Dictionary
    • n Tetralogy (Gr. Drama) A group or series of four dramatic pieces, three tragedies and one satyric, or comic, piece (or sometimes four tragedies), represented consequently on the Attic stage at the Dionysiac festival.☞ A group or series of three tragedies, exhibited together without a fourth piese, was called a trilogy.
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Century Dictionary and Cyclopedia
    • n tetralogy A group of four dramatic compositions, three tragic and one satyric, which were exhibited in connection on the Athenian stage for the prize at the festivals of Bacchus. The term has been extended to a group of four operatic works treating of related themes, and intended to be performed in connection.
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Chambers's Twentieth Century Dictionary
    • n Tetralogy te-tral′ō-ji a group of four dramas, three tragic and one satiric, exhibited together at the festivals of Dionysos at Athens: any series of four related dramatic or operatic works.
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Webster's Revised Unabridged Dictionary
Gr. ; te`tra-see Tetra-) + a speech, discourse: cf. F. tétralogie,


In literature:

The biggest of his works, the "Nibelung Tetralogy," was conceived and for the most part written in Switzerland.
"Beacon Lights of History, Volume XIV" by John Lord
The tetralogy to which it belonged consisted of the 'Laius,' 'Oedipus,' 'Seven Against Thebes,' and 'Sphinx.
"Library of the World's Best Literature, Ancient and Modern, Vol. 1"
Wagner never tired of exploiting the variation form in his operas, particularly in the Tetralogy.
"Beethoven" by George Alexander Fischer
For those who have sensitive feelings the fourth day of the Tetralogy has a depressing effect.
"Musicians of To-Day" by Romain Rolland
Second Part of the Tetralogy: The Odyssey.
"The Standard Operaglass" by Charles Annesley
The tetralogy is of a directly politico-social kind.
"A Short History of French Literature" by George Saintsbury
In all, four cycles of the tetralogy were given.
"Garcia the Centenarian And His Times" by M. Sterling Mackinlay
And the rebellious spirit of Wagner's bell-ringing passed over into his Tetralogy.
"Franz Liszt" by James Huneker
"Plato and the Other Companions of Sokrates, 3rd ed. Volume I (of 4)" by George Grote
Intended Tetralogy for the Republic.
"Plato and the Other Companions of Sokrates, 3rd ed. Volume IV (of 4)" by George Grote

In news:

An example of an original tetralogy would be three tragedies and a comedy performed serially on the Athenian stages of ancient Greece.

In science:

Now, the clinician can select one of the green-coloured concepts, for example Repair Fal lot Tetralogy, in order to filter the map to just those concepts that are related to it (see Figure 3(c)).
Building conceptual spaces for exploring and linking biomedical resources