A kind of lyric poetry in honor of Bacchus, usually sung by a band of revelers to a flute accompaniment; hence, in general, a poem written in a wild irregular strain.
I will not dwell on Naumann's jokes at the expense of Mr. Casaubon that evening, or on his dithyrambs about Dorothea's charm, in all which Will joined, but with a difference.
George Eliot. Middlemarch
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And you, too, were there, Sultans with long pipes reclining beneath arbours in the arms of Bayaderes; Djiaours, Turkish sabres, Greek caps; and you especially, pale landscapes of dithyrambic lands, that often show us at once palm trees and firs, tigers on the right, a lion to the left, Tartar minarets on the horizon;
Gustave Flaubert. Madame Bovary
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M. Gillenormand talked nonsense in connection with the wedding, and all the fripperies of the eighteenth century passed pell-mell through his dithyrambs.