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

Soon after the first war in France broke out, Castellio penned a treatise that was far ahead of its time. —Michael Bruening, The Conversation, 3 Dec. 2025

Part memoir, part reportage, part gossip, part philosophical treatise on Spinoza’s notion of God, Vivian Blaxell’s Worthy of the Event is more than anything a moving and brilliant exploration of trans life since the ’60s, when Blaxell transitioned. —Emma Alpern, Vulture, 2 Dec. 2025

The result of the treatise was his being hired by the brand. —Viju Mathew, Robb Report, 29 Nov. 2025

The treatise is organized as seven sections, each corresponding to a different set of games, and includes a number of optional variations, outlining twenty-two different games in total. —JSTOR Daily, 26 Nov. 2025

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
• civitas
• cellulitis
• margaritas
• tonsillitis

Kids Definition

treatise

noun

trea·​tise ˈtrēt-əs 

: a book or article examining a subject carefully and completely