From Longman Dictionary of Contemporary Englishtreatisetrea‧tise /ˈtriːtɪs, -tɪz/ noun [countable] TCNa serious book or article about a particular subjecttreatise on a treatise on medical ethics
Examples from the Corpus
treatise• Most of the critical treatises in the classical tradition are trite and commonplace.• The watchmaker of my title is borrowed from a famous treatise by the eighteenth-century theologian William Paley.• Those who lament that Berlin never wrote a great treatise miss the point.• There he wrote philosophical treatises for which scholars remember him.treatise on• a treatise on drugs and youthOrigin treatise (1300-1400) Anglo-French tretiz, from Old French traitier; → TREAT1 