noun🔗ShareAbhandlung, TraktatA formal, usually lengthy, systematic discourse on some subject."Professor Lee assigned a lengthy treatise on the history of the Roman Empire to her students. "Professor Lee wies ihren Studenten eine lange Abhandlung über die Geschichte des Römischen Reiches zu.writingliteraturephilosophytheoryscienceeducationChat with AIVocabulary GamePractice Reading