trea·​tise ˈtrē-təs How to pronounce treatise (audio)
 also  -təz
: a systematic exposition or argument in writing including a methodical discussion of the facts and principles involved and conclusions reached
a treatise on higher education
obsolete : account, tale

Examples of treatise in a Sentence

Recent Examples on the Web Other changes since Roberts first published his treatise have been more gradual. John Myers, Twin Cities, 26 May 2024 His doctoral thesis, which is related to economic discrimination, and his treatises on family, human capital, rational addictions, the economic approach to human behavior, and social economics are wonderful. Vera Bergengruen/buenos Aires, TIME, 23 May 2024 For years, the volume — a 19th-century French treatise on the human soul — was brought out for show and tell, and sometimes, according to library lore, used to haze new employees. Julia Jacobs, New York Times, 27 Mar. 2024 Claudius Ptolemy, an Alexandrian mathematician and astronomer, formalized this view in the second century AD in his treatise Almagest. Danuta Hamlin, Fox News, 18 Feb. 2024 See all Example Sentences for treatise 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'treatise.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English tretis, from Anglo-French tretiz, alteration of tretez, traitet, from Medieval Latin tractatus, from Latin tractare to treat, handle

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of treatise was in the 14th century

Dictionary Entries Near treatise

Cite this Entry

“Treatise.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2024.

Kids Definition


trea·​tise ˈtrēt-əs How to pronounce treatise (audio)
: a book or article examining a subject carefully and completely
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