treatise

noun

trea·​tise ˈtrē-təs 

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

One way to reduce the risk of this happening is to connect the AI model to a body of legal material, such as case law and treatises. —Ellen Sheng, CNBC, 19 May 2026

In 1653, Izaak Walton published The Compleat Angler, a treatise on fishing technique. —Drew Goins, The Atlantic, 19 May 2026

More powerful than an argument or a treatise, The Last Interview is an immersive experience. —Sheri Linden, HollywoodReporter, 15 May 2026

In 1661, John Evelyne’s treatise Fumifugium outlined negative health effects of breathing coal smoke. —Annie Persons, The Conversation, 7 May 2026

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

Rhymes for treatise

• fetus
• foetus
• meatus
• thetis
• caritas
• mellitus
• cellulitis
• margaritas
• tonsillitis

Kids Definition

treatise

noun

trea·​tise ˈtrēt-əs 

: a book or article examining a subject carefully and completely