English dictionary
tetralogy
/t/E/'tr/&/l/@//dZ//i/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a series of four related works (plays or operas or novels)
Source: WordNet 3.0
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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.
Source: webster1913