tractate definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a treatise or dissertation
Origin: Late Latin tractatus, discussion, treatise ; from past participle of Classical Latin tractare: see tractable
tractate definition by American Heritage Dictionary
A treatise; an essay.
Origin: Latin tractātus; see tract2.