noun
[ U ] a method of study in which a subject is divided into very small parts and the student must be successful in one part before he or she can go on to the next
noun
[ U ] a method of study in which a subject is divided into very small parts and the student must be successful in one part before he or she can go on to the next
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005