noun🔗ShareТрактат, научный трудA formal, usually lengthy, systematic discourse on some subject."Professor Lee assigned a lengthy treatise on the history of the Roman Empire to her students. "Профессор Ли задала своим студентам длинный трактат по истории Римской империи.writingliteraturephilosophytheoryscienceeducationChat with AIVocabulary GamePractice Reading