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 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 From Edith Wharton’s treatise on décor to a portrait of 1990s Tokyo, the books that designers return to again and again for inspiration. Jan. 23, 2024, 12:43 p.m. Catherine Hong, New York Times, 23 Jan. 2024 Each chapter of The New Leviathans begins with a quotation from Leviathan, Hobbes’s major treatise on state power, as if to provide the reader with a kernel of truth and an ominous warning about what is to come. Helena Rosenblatt, Foreign Affairs, 20 Feb. 2024 Embedded in those responses is a treatise on the capabilities of retreads and movie musicals themselves. Scott Hocker, theweek, 21 Jan. 2024 From Edith Wharton’s treatise on décor to a portrait of 1990s Tokyo, these are the 11 vintage interiors books that designers return to again and again for inspiration. Chris Rhodes Jacob K, New York Times, 14 Feb. 2024 At the time, the bookseller specialized in law treatises, dictionaries and office supplies. Maraya King, Twin Cities, 1 Feb. 2024 The original meaning of this clause was to secure (equal) protection of the fundamental rights of persons — including the rights to life and personal security — as these had been expounded in Blackstone’s Commentaries on the Laws of England and leading American treatises. Christian Schneider, National Review, 21 Dec. 2023

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 26 May. 2024.

Kids Definition


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