This dictionary seems in many ways a clone of "Daijirin". Not only is the same Tokyo University professor listed as editor – though it is important to note that the names appearing on the covers of Japanese dictionaries often have little relation to the people who actually did the work; one case in point being "Koujien", even the most recent editions of which list as editor one 新村出 Shinmura Izuru, who has been dead since 1967 – but the definitions in "Daijisen" follow closely those of "Daijirin" as well. It also follows "Daijirin"'s practice of putting the contemporary meanings first in its definitions. The two chief differences I've noticed are that "Daijisen" has color pictures while "Daijirin" uses line drawings – a rather obvious difference – and that the example sentences and phrases in "Daijisen" are more often typical of the contemporary language rather than citations from classical literature. This latter point makes "Daijisen" my first choice when I am writing Japanese and I want to check how words are used in context.