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The definition of treatise

2 Definitions of: treatise

1. noun, a formal work on a subject, esp one that deals systematically with its principles and conclusions
2. noun, an obsolete word for narrative
3. Show me some examples of this word: treatise
4. Show me the etymology of the word: treatise

Synonyms:	work, paper, writing, study, essay, thesis, tract, pamphlet, exposition, dissertation	And more...

From Collins