treatise

noun

trea·​tise ˈtrē-təs How to pronounce treatise (audio)
also -təz
Synonyms of treatise
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
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But the sections that can be read between gaps where the surface is lost point to a philosophical treatise on ethics, arts and human nature. Leslie Katz, Forbes.com, 1 July 2026 The text is a philosophical treatise on ethics and human moral progress, and the final column revealed the name Aristocreon, a nephew and disciple of the Stoic philosopher Chrysippus. ArsTechnica, 30 June 2026 Physiognomic treatises reappeared in the sixteenth and seventeenth centuries, then took off in the eighteenth and nineteenth. Cal Revely-Calder, New Yorker, 29 June 2026 This show is not a sociological treatise on the struggles of a contemporary American city. Brian Davids, HollywoodReporter, 27 June 2026 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

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Cite this Entry

“Treatise.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/treatise. Accessed 6 Jul. 2026.

Kids Definition

treatise

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

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