Added 9 October 2026
treatise
/ˈtɹiːtɪs/ noun
In Latin: detractatus, tractātus Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about treatise at Wordnik → Where our words come from →
- A formal, usually lengthy, systematic discourse on some subject.
Origin
From Middle English tretys, from Anglo-Norman tretiz and Old French traitis (“treatise, account”), from traitier (“to deal with, treat”).
From Wiktionary, via Kaikki.org (CC BY-SA)