treatise

noun

trea·​tise ˈtrē-təs How to pronounce treatise (audio)
 also  -təz
1
: 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
2
obsolete : account, tale

Examples of treatise in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Whereas the play only obliquely references the character’s successful new novel, this version presents Eileen’s manuscript — co-written with her mousy lover Thea (Imogen Potts), a former schoolmate of Hedda’s — as a revelatory treatise on the future of human sexuality. Abby Monteil, Them., 28 Oct. 2025 For hundreds of years, physicians and scientists wrote treatises on its health benefits. Aleksandra Crapanzano, The Atlantic, 27 Oct. 2025 The ancient Romans and Greeks never really wrote treatises about how to lie well. JSTOR Daily, 16 Oct. 2025 Thomas Ady, the 17th century author of a skeptical treatise on witchcraft A Candle in the Dark appears to refer to Vincent without naming him directly. Scott Neuman, NPR, 1 Oct. 2025 See All Example Sentences for treatise

Word History

Etymology

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

Browse Nearby Words

Cite this Entry

“Treatise.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/treatise. Accessed 4 Nov. 2025.

Kids Definition

treatise

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

More from Merriam-Webster on treatise

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!