n. pl. tril·o·gies
A group of three dramatic, literary, or other creative works related in subject or theme.
[Greek trilogiā, series of three related tragedies : tri-, tri- + logos, word, saying; see -LOGY.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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