This paper reports on the development and uses of a dictionary-linked system, the Japanese Language Semantic Features Dictionary. The Semantic Features Dictionary automatically analyzes the input text and divides it into words, showing the reading of each word and its concepts. Although a regular monolingual Japanese dictionary is very useful for advanced level learners, it is useful only if the learner can read the kanji he/she wishes to look up. The dictionary developed here enables the learner to search for a word automatically by pasting Japanese reading material in a text box and letting the computer search the dictionary. This allows learners to use Internet sources for study purposes. It is available to the public over the Internet at http://language.tiu.ac.jp.