noun

treatise

TREE-tihs

noun

A long, formal written work that thoroughly examines a single subject.

"He wrote a treatise on the philosophy of law."

How to Use Treatise

Learner’s notes

In plain EnglishA treatise is a serious, detailed piece of writing devoted to one topic.

Common pairings

a scholarly treatise write a treatise

treatises plural

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He wrote a _____ on the philosophy of law.

From Old French traitis, "treatise, account" — related to "treat" and "treaty."

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